OM-1 Video (h265/10-Bit/HLG) - best out of camera picture?

[abgestumpft]

When I first read the OM-1 Video specs I wondered if the h265/10bit codec would have any use for me: this works only with OM-LOG400 or HLG. But in contrast to photos I don't want to do editing/grading on video: here I want best as possible picture out of the box.

Therefore OM-LOG400 is nothing I would use and I first thought about HLG (Hybrid Log Gamma -> HDR format) that I also would have to use some color grading etc. to make that video useable.

I read up on HLG and found out that HLG is a broadcasting format that can be played on both SDR and HDR screens.

On a touch and try of the OM-1 yesterday I was able to record a short clip on my SD card.

Then tested at home:
1. On my PC (SDR monitor) -> picture looks very good (sharpness, colors etc)
2. Played via Plex Server on my LG C1 TV: TV shows "HLG HDR" in the upper right corner of the screen -> HDR detected. This also works if Plex Player does not play the original video, but a video transcoded to e.g. 20MBit/sec 4K (by Plex Server on the fly). Picture is also looking very good.

I first thought that HLG needs a similar way of color grading like the LOG formats, but that doesn't seem to be the case! For me this now means (if I don't find a showstopper): with the OM-1 I will film with 4K, 60fps, H265, 10bit, HLG, 150MBit/sec

 

[Dspider]

my logic is the larger the pixel the wider the colour spectrum is (especially in the shadows), and its been true so far, no editing for me.

Ds

 

[Interceptor121]

I was one of the first consumer to try HLG some time ago for my underwater videos and I got quite excited about it

Setting up your GH5 for HLG HDR capture

We got our GH5 ready for HDR capture in the previous post so how do we make the most of it? If you have an external recorder or monitor that supports HDR it is easy! Also if you do you probably hav…

interceptor121.com

You can do a bit of reading and see some materials

Later on other people have thought of using HLG as a format for editing

I have abandoned HLG entirely for the following reasons

1. It is hard to edit as HLG is not supported at consumer monitor level, while HDR-10 is

2. The colors space has limited coverage from your screen and the white point is different

3. At the end the sensor delivers more or less 10 stops in video and on the GH5 there are other more suitable photo style

4. When it says it is backwards compatible it just really compresses the birghtness

i would expect this is a novelty in the OM space but HLG has been in Sony and Panasonic camera for over 5 years now and has never really picked up

Olympus picture style or whatever they are called are generally not video friendly over sharpened over saturated and with a lot of contrast maybe you can find an image you need tweak it and shoot the video that way

SDR can manage 10 stops and the camera does not have more than that so there is no real benefit in HDR but only a risk the colors are way overboard

 

[abgestumpft]

I was one of the first consumer to try HLG some time ago for my underwater videos and I got quite excited about it

https://interceptor121.com/2018/06/15/setting-up-your-gh5-for-hlg-hdr-capture/
You can do a bit of reading and see some materials

Great Video, watched it on the TV in 4K HLG

Later on other people have thought of using HLG as a format for editing

I have abandoned HLG entirely for the following reasons

1. It is hard to edit as HLG is not supported at consumer monitor level, while HDR-10 is

Don't I need a HDR Monitor to edit both of them? Otherwise I would not be able to see the details in the highlights... What makes HDR10 more consumer monitor friendly than HLG ?

2. The colors space has limited coverage from your screen and the white point is different

I now checked the color space and its BT.2020 (which looks even bigger than AdobeRGB) vs. BT.709 (sRGB like?) . But both have the same whitepoint D65.

3. At the end the sensor delivers more or less 10 stops in video and on the GH5 there are other more suitable photo style

4. When it says it is backwards compatible it just really compresses the birghtness

But is this a bad thing? My understanding is that on an SDR Monitor the very bright parts will be white (=blown out), while the rest will be good. So is there a disadvantage vs. capturing in SDR 8Bit directly (on OM-1: 4k - 60p - H264 - 8bit - 200MBit/sec)?
So I can watch the same video in HDR on a TV, and also in SDR on the PC.
I don't think I will create many movies that will have viewers outside of my family

i would expect this is a novelty in the OM space but HLG has been in Sony and Panasonic camera for over 5 years now and has never really picked up

Olympus picture style or whatever they are called are generally not video friendly over sharpened over saturated and with a lot of contrast maybe you can find an image you need tweak it and shoot the video that way

On the OM-1 there is no picture style with h265/10bit (only OM Log 400 or HLG). In the picture style you could adjust the sharpness. I did not find a sharpness option in the manual for HLG. But the short Video I did in HLG looked good to me (no sharpening artefacts)

SDR can manage 10 stops and the camera does not have more than that so there is no real benefit in HDR but only a risk the colors are way overboard

On the OM-1 I have those options:
1. Picture mode (only available in H264 8Bit)
2. Flat (only available in H264 8Bit) - needs color grading
3. OM-Log400 - needs color grading
4. HLG

Since I want to avoid editing/color grading, this limits it (for me) to:
1. Picture mode - 4k - 60p - H264 - 8bit - 200MBit/sec - BT.709
4. HLG - 4k - 60p - H265 - 10bit - 150MBit/sec - BT.2020

Maybe I can also pack 10stops of DR in the H264 - 8bit video with a special picture profile. To be seen how this will look like. And not sure if this will have an advantage in my use case scenario over HLG.

As I said I really don't like to do much editing and color grading on video. So I really think that HLG could be a good option in my case.

Thanks for all you inputs (e.g. I was not aware of the different color space in HLG).

 

[Interceptor121]

I was one of the first consumer to try HLG some time ago for my underwater videos and I got quite excited about it

https://interceptor121.com/2018/06/15/setting-up-your-gh5-for-hlg-hdr-capture/
You can do a bit of reading and see some materials

Great Video, watched it on the TV in 4K HLG

Later on other people have thought of using HLG as a format for editing

I have abandoned HLG entirely for the following reasons

1. It is hard to edit as HLG is not supported at consumer monitor level, while HDR-10 is

Don't I need a HDR Monitor to edit both of them? Otherwise I would not be able to see the details in the highlights... What makes HDR10 more consumer monitor friendly than HLG ?

2. The colors space has limited coverage from your screen and the white point is different

I now checked the color space and its BT.2020 (which looks even bigger than AdobeRGB) vs. BT.709 (sRGB like?) . But both have the same whitepoint D65.

3. At the end the sensor delivers more or less 10 stops in video and on the GH5 there are other more suitable photo style

4. When it says it is backwards compatible it just really compresses the birghtness

But is this a bad thing? My understanding is that on an SDR Monitor the very bright parts will be white (=blown out), while the rest will be good. So is there a disadvantage vs. capturing in SDR 8Bit directly (on OM-1: 4k - 60p - H264 - 8bit - 200MBit/sec)?
So I can watch the same video in HDR on a TV, and also in SDR on the PC.
I don't think I will create many movies that will have viewers outside of my family

i would expect this is a novelty in the OM space but HLG has been in Sony and Panasonic camera for over 5 years now and has never really picked up

Olympus picture style or whatever they are called are generally not video friendly over sharpened over saturated and with a lot of contrast maybe you can find an image you need tweak it and shoot the video that way

On the OM-1 there is no picture style with h265/10bit (only OM Log 400 or HLG). In the picture style you could adjust the sharpness. I did not find a sharpness option in the manual for HLG. But the short Video I did in HLG looked good to me (no sharpening artefacts)

SDR can manage 10 stops and the camera does not have more than that so there is no real benefit in HDR but only a risk the colors are way overboard

On the OM-1 I have those options:
1. Picture mode (only available in H264 8Bit)
2. Flat (only available in H264 8Bit) - needs color grading
3. OM-Log400 - needs color grading
4. HLG

Since I want to avoid editing/color grading, this limits it (for me) to:
1. Picture mode - 4k - 60p - H264 - 8bit - 200MBit/sec - BT.709
4. HLG - 4k - 60p - H265 - 10bit - 150MBit/sec - BT.2020

Maybe I can also pack 10stops of DR in the H264 - 8bit video with a special picture profile. To be seen how this will look like. And not sure if this will have an advantage in my use case scenario over HLG.
As I said I really don't like to do much editing and color grading on video. So I really think that HLG could be a good option in my case.

Thanks for all you inputs (e.g. I was not aware of the different color space in HLG).

It’s a shame so you are really limited to HLG and OMLOG only

have you checked if there is now a LUT for omlog?

that will do at least a normalisation

if the camera doesn’t support other picture modes is a strong limitation

I apologise re white point it is middle grey that is different is darker so it looks all funny in terms of exposure

Personally I would try to see what omlog does with the lut and if all goes bad HLG really as last resort

Does the camera have exposure aids for HLG? The lcd and evf are barely 8 bits so they will be totally off without aids

--
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[abgestumpft]

I was one of the first consumer to try HLG some time ago for my underwater videos and I got quite excited about it

https://interceptor121.com/2018/06/15/setting-up-your-gh5-for-hlg-hdr-capture/
You can do a bit of reading and see some materials

Great Video, watched it on the TV in 4K HLG

Later on other people have thought of using HLG as a format for editing

I have abandoned HLG entirely for the following reasons

1. It is hard to edit as HLG is not supported at consumer monitor level, while HDR-10 is

Don't I need a HDR Monitor to edit both of them? Otherwise I would not be able to see the details in the highlights... What makes HDR10 more consumer monitor friendly than HLG ?

2. The colors space has limited coverage from your screen and the white point is different

I now checked the color space and its BT.2020 (which looks even bigger than AdobeRGB) vs. BT.709 (sRGB like?) . But both have the same whitepoint D65.

3. At the end the sensor delivers more or less 10 stops in video and on the GH5 there are other more suitable photo style

4. When it says it is backwards compatible it just really compresses the birghtness

But is this a bad thing? My understanding is that on an SDR Monitor the very bright parts will be white (=blown out), while the rest will be good. So is there a disadvantage vs. capturing in SDR 8Bit directly (on OM-1: 4k - 60p - H264 - 8bit - 200MBit/sec)?
So I can watch the same video in HDR on a TV, and also in SDR on the PC.
I don't think I will create many movies that will have viewers outside of my family

i would expect this is a novelty in the OM space but HLG has been in Sony and Panasonic camera for over 5 years now and has never really picked up

Olympus picture style or whatever they are called are generally not video friendly over sharpened over saturated and with a lot of contrast maybe you can find an image you need tweak it and shoot the video that way

On the OM-1 there is no picture style with h265/10bit (only OM Log 400 or HLG). In the picture style you could adjust the sharpness. I did not find a sharpness option in the manual for HLG. But the short Video I did in HLG looked good to me (no sharpening artefacts)

SDR can manage 10 stops and the camera does not have more than that so there is no real benefit in HDR but only a risk the colors are way overboard

On the OM-1 I have those options:
1. Picture mode (only available in H264 8Bit)
2. Flat (only available in H264 8Bit) - needs color grading
3. OM-Log400 - needs color grading
4. HLG

Since I want to avoid editing/color grading, this limits it (for me) to:
1. Picture mode - 4k - 60p - H264 - 8bit - 200MBit/sec - BT.709
4. HLG - 4k - 60p - H265 - 10bit - 150MBit/sec - BT.2020

Maybe I can also pack 10stops of DR in the H264 - 8bit video with a special picture profile. To be seen how this will look like. And not sure if this will have an advantage in my use case scenario over HLG.
As I said I really don't like to do much editing and color grading on video. So I really think that HLG could be a good option in my case.

Thanks for all you inputs (e.g. I was not aware of the different color space in HLG).

It’s a shame so you are really limited to HLG and OMLOG only

have you checked if there is now a LUT for omlog?

Yes, there are LUTs available for Davinci Resolve:
https://cs.olympus-imaging.jp/en/support/imsg/digicamera/download/software/3dlut/3dlutdl.cfm

I have Davinci Resolve, but not the OM-1 yet. I will give this OMLog400 a try once it arrived. But as said, I want to avoid additional work in video if possible

Interesting: from the naming of the LUTs it seems that OMLog400 on h264 is with color space BT.709 while in h265 it is in BT.2020

that will do at least a normalisation

if the camera doesn’t support other picture modes is a strong limitation

Yes they have h264/8bit (all picture modes) but h265/10bit is limited to OMLog400 or HLG only. That's why I have some hopes in HLG...

I apologise re white point it is middle grey that is different is darker so it looks all funny in terms of exposure

Ok, need to check this with future videos. At the moment I only had one short clip and it was looking OK. Maybe it was a little darker, but in that scene nothing that bothered me...

Personally I would try to see what omlog does with the lut and if all goes bad HLG really as last resort

Yes I need to do further testing. Maybe I would end up in using h264/8Bit with normal gradation / Picture Profile. I just was exited yesterday that I could play this HLG clip on all of my devices without issues. I thought it could look flat on the PC or not play directly at the TV or only in SD mode there. So here I was surprised it was just working ;-)

Does the camera have exposure aids for HLG? The lcd and evf are barely 8 bits so they will be totally off without aids

In Video the OM-1 has histogram and Zebras (I guess they also work in HLG, did not find any limits in the docu). But in the past (EM1.3 etc.) in photo mode the histogram and highlight/shadow warning blinkies were all based on the preview picture in the viewfinder/LCD Monitor, not RAW or JPG. In case this also applies for the OM-1 and e.g. the highlights clip on the monitor (but not the video file), this would also have limited usage. But that's also something I need to test: if the zebras/histogram in HLG can be used to judge the brightness of the final video.

 

[Interceptor121]

I was one of the first consumer to try HLG some time ago for my underwater videos and I got quite excited about it

https://interceptor121.com/2018/06/15/setting-up-your-gh5-for-hlg-hdr-capture/
You can do a bit of reading and see some materials

Great Video, watched it on the TV in 4K HLG

Later on other people have thought of using HLG as a format for editing

I have abandoned HLG entirely for the following reasons

1. It is hard to edit as HLG is not supported at consumer monitor level, while HDR-10 is

Don't I need a HDR Monitor to edit both of them? Otherwise I would not be able to see the details in the highlights... What makes HDR10 more consumer monitor friendly than HLG ?

2. The colors space has limited coverage from your screen and the white point is different

I now checked the color space and its BT.2020 (which looks even bigger than AdobeRGB) vs. BT.709 (sRGB like?) . But both have the same whitepoint D65.

3. At the end the sensor delivers more or less 10 stops in video and on the GH5 there are other more suitable photo style

4. When it says it is backwards compatible it just really compresses the birghtness

But is this a bad thing? My understanding is that on an SDR Monitor the very bright parts will be white (=blown out), while the rest will be good. So is there a disadvantage vs. capturing in SDR 8Bit directly (on OM-1: 4k - 60p - H264 - 8bit - 200MBit/sec)?
So I can watch the same video in HDR on a TV, and also in SDR on the PC.
I don't think I will create many movies that will have viewers outside of my family

i would expect this is a novelty in the OM space but HLG has been in Sony and Panasonic camera for over 5 years now and has never really picked up

Olympus picture style or whatever they are called are generally not video friendly over sharpened over saturated and with a lot of contrast maybe you can find an image you need tweak it and shoot the video that way

On the OM-1 there is no picture style with h265/10bit (only OM Log 400 or HLG). In the picture style you could adjust the sharpness. I did not find a sharpness option in the manual for HLG. But the short Video I did in HLG looked good to me (no sharpening artefacts)

SDR can manage 10 stops and the camera does not have more than that so there is no real benefit in HDR but only a risk the colors are way overboard

On the OM-1 I have those options:
1. Picture mode (only available in H264 8Bit)
2. Flat (only available in H264 8Bit) - needs color grading
3. OM-Log400 - needs color grading
4. HLG

Since I want to avoid editing/color grading, this limits it (for me) to:
1. Picture mode - 4k - 60p - H264 - 8bit - 200MBit/sec - BT.709
4. HLG - 4k - 60p - H265 - 10bit - 150MBit/sec - BT.2020

Maybe I can also pack 10stops of DR in the H264 - 8bit video with a special picture profile. To be seen how this will look like. And not sure if this will have an advantage in my use case scenario over HLG.
As I said I really don't like to do much editing and color grading on video. So I really think that HLG could be a good option in my case.

Thanks for all you inputs (e.g. I was not aware of the different color space in HLG).

It’s a shame so you are really limited to HLG and OMLOG only

have you checked if there is now a LUT for omlog?

Yes, there are LUTs available for Davinci Resolve:
https://cs.olympus-imaging.jp/en/support/imsg/digicamera/download/software/3dlut/3dlutdl.cfm

I have Davinci Resolve, but not the OM-1 yet. I will give this OMLog400 a try once it arrived. But as said, I want to avoid additional work in video if possible

Interesting: from the naming of the LUTs it seems that OMLog400 on h264 is with color space BT.709 while in h265 it is in BT.2020

that will do at least a normalisation

if the camera doesn’t support other picture modes is a strong limitation

Yes they have h264/8bit (all picture modes) but h265/10bit is limited to OMLog400 or HLG only. That's why I have some hopes in HLG...

I apologise re white point it is middle grey that is different is darker so it looks all funny in terms of exposure

Ok, need to check this with future videos. At the moment I only had one short clip and it was looking OK. Maybe it was a little darker, but in that scene nothing that bothered me...

Personally I would try to see what omlog does with the lut and if all goes bad HLG really as last resort

Yes I need to do further testing. Maybe I would end up in using h264/8Bit with normal gradation / Picture Profile. I just was exited yesterday that I could play this HLG clip on all of my devices without issues. I thought it could look flat on the PC or not play directly at the TV or only in SD mode there. So here I was surprised it was just working ;-)

Does the camera have exposure aids for HLG? The lcd and evf are barely 8 bits so they will be totally off without aids

In Video the OM-1 has histogram and Zebras (I guess they also work in HLG, did not find any limits in the docu). But in the past (EM1.3 etc.) in photo mode the histogram and highlight/shadow warning blinkies were all based on the preview picture in the viewfinder/LCD Monitor, not RAW or JPG. In case this also applies for the OM-1 and e.g. the highlights clip on the monitor (but not the video file), this would also have limited usage. But that's also something I need to test: if the zebras/histogram in HLG can be used to judge the brightness of the final video.

Zebra are good to check you are not clipping. Highlight shadows disable it in video it is a distraction.

If there is some OM-Log sample footage somewhere I can post the LUTed clip somewhere if you like

Generally if you get it right in camera and don't do any correction at all in post processing it is ok to use 8 bits however it is possible that OMLOG and HLG have more room for highlights clipping than other picture styles

 

[abgestumpft]

While I still wait for my OM-1 to be delivered I was doing some testing with the one HLG movie I have from the touch&try event and also did some more research on HLG.

There is a good overview on HLG topic (inkl. the two linked Youtube videos in it) here:
https://www.cined.com/the-link-between-hdr-sdr-and-hlg-explained/

Plus:

The following is what I understood, so please correct me if I'm wrong:

Difference between SDR and HLG:
SDR (Standard Dynamic Range) has a peak brightness of 100nits and ca. 6.8stops Dynamic Range. The Whitepoint ("white sheet of paper") is at 85-90%
HLG (Hybrid Log Gamma) has a peak brightness 1000nits and ca. 14 stops Dynamic Range. The Whitepoint is at 75%

HLG over other HDR formats:
When you play other HDR formats on an SDR TV/Monitor the image will look very flat, since it will squeeze the whole HDR range into SDR.
HLG was made to also look good on SDR screens (broadcasting format): it takes the big highlight range of the camera and squashes it down at "the top" of the picture (that is the log part of HLG). It is a log gamma curve at the top (highlights) and the bottom (shadows/midtones) it is more similar to rec709 (SDR). It will look a little darker overall and not that colorful on SDR screens, but still good.

Dynamic Range thoughts:
According to PhotonstoPhotos, the OM-1 has ca. 9.5 stops of DR (in Photo RAW). I guess this is the max. we could get in HLG, maybe less: Would be interesting to see some measurements on this...
My LG C1 OLED has (according to Rtings) Real Scene Highlight: 628 cd/m² = 9.3 stops

My Tests on HDR LG C1 TV:
I tested streaming from my PC via Plex Server and also via USB-Stick. In both cases HLG was detected and the picture looked great. But via USB-Stick (TV only has USB 2.0) the video was choppy (not enough bandwidth).

My Test on SDR Computer Monitor:
a) VLC Player: Playing it directly in VLC looked OK (a little darker), but OK.
But I found a setting hereto use OpenGL and Tone-Mapping: "Reinhard". Then it was looking very good:


VLC: with adjustments (left) and with standard settings (right)

b) Plex Windows Player:
There it looked good (similar to VLC with adjustments) out of the box: with payed plex pass there is option for HDR to SDR Tonemapping that's doing the job.

c) Editing in Davinci Resolve (in SDR):
Looks dark and desaturated (more desaturated than in default VLC settings). But there is a good article how to transformation to SDR here . The setting below needs the Studio version, but the linked page has also a LUT that could be used in the free version (did not try that one):


Creating a node in Davinci Resolve Studio to tonemap HLG to SDR

I did export the clip like that to h264 8 bit mov file and it was looking good.

d) Editing in Davinci Resolve (in HDR):
No clue how this is working My monitor can do "Baby HDR" with peak brightness of 350cd/m². In Windows I can also enable HDR mode. At the moment I have no need for this, maybe when time comes I have to spend some time here...

Shooting OM-1 with HLG:
Since I don't have my OM-1 yet, this is something I have to sort out. It will be h265/10-Bit/HLG/150Mbit/sec which is good. I'm a little concerned about the exposure settings: if I remember correctly the video was looking a little dark on the OM-1 screen. Not sure if the Zebras and Histogram will be of value here. In one of the videos I linked above it was said that for skin tones one should use 60% Zebras in HLG (vs. 70% in SDR). So might be more difficult to find the correct exposure in HLG than the normal modes on the OM-1

My first summary:
For Playback everything looks good for me:
Without doing any editing/tonemapping I can play it on my TV in HDR and also in SDR on my PC using VLC (and the OpenGL setting).
It might look like the version on the right of the VLC screenshot on normal SDR TV (but should be OK when e.g. using Plex with HDR->SDR tonemapping).
When I like to edit the Video (in SDR) I create a node in davinci resolve which corrects the brightness and color.

So far so good

 

[Interceptor121]

While I still wait for my OM-1 to be delivered I was doing some testing with the one HLG movie I have from the touch&try event and also did some more research on HLG.

There is a good overview on HLG topic (inkl. the two linked Youtube videos in it) here:
https://www.cined.com/the-link-between-hdr-sdr-and-hlg-explained/

Plus:

The following is what I understood, so please correct me if I'm wrong:

Difference between SDR and HLG:
SDR (Standard Dynamic Range) has a peak brightness of 100nits and ca. 6.8stops Dynamic Range.

That's a typical misconception fed by ignorance on YouTube. Rec709 establishes a peak brightness of 100 nits and a minimum brightness of 0.1 nits giving an overall contrast ratio of 1000:1 which is 9.96 stops.

The Whitepoint ("white sheet of paper") is at 85-90%
HLG (Hybrid Log Gamma) has a peak brightness 1000nits and ca. 14 stops Dynamic Range. The Whitepoint is at 75%

This is also incorrect HLG can handle 5000 nits however displays can't usually do more than 1000. Typical value are 1000 and 0.005 nits for a total of 14.28 stops

Middle grey is 38% and white is always 90%. note that HLG has two different specs from HK and BBC

HLG over other HDR formats:
When you play other HDR formats on an SDR TV/Monitor the image will look very flat, since it will squeeze the whole HDR range into SDR.
HLG was made to also look good on SDR screens (broadcasting format): it takes the big highlight range of the camera and squashes it down at "the top" of the picture (that is the log part of HLG). It is a log gamma curve at the top (highlights) and the bottom (shadows/midtones) it is more similar to rec709 (SDR). It will look a little darker overall and not that colorful on SDR screens, but still good.

Dynamic Range thoughts:
According to PhotonstoPhotos, the OM-1 has ca. 9.5 stops of DR (in Photo RAW). I guess this is the max. we could get in HLG, maybe less: Would be interesting to see some measurements on this...
My LG C1 OLED has (according to Rtings) Real Scene Highlight: 628 cd/m² = 9.3 stops

OLED Tvs have true blacks and therefore your Tv should be well able to display a contrast ratio of more than 5000 check the specs

The camera in reality does not produce more than SDR with decent SNR however for editing purposes cameras offer different gamma that offer more dynamic range through various techniques. OM-Log is the only one that does not have an sRGB curve and would be suitable for editing

My Tests on HDR LG C1 TV:
I tested streaming from my PC via Plex Server and also via USB-Stick. In both cases HLG was detected and the picture looked great. But via USB-Stick (TV only has USB 2.0) the video was choppy (not enough bandwidth).

My Test on SDR Computer Monitor:
a) VLC Player: Playing it directly in VLC looked OK (a little darker), but OK.
But I found a setting hereto use OpenGL and Tone-Mapping: "Reinhard". Then it was looking very good:


VLC: with adjustments (left) and with standard settings (right)

b) Plex Windows Player:
There it looked good (similar to VLC with adjustments) out of the box: with payed plex pass there is option for HDR to SDR Tonemapping that's doing the job.

c) Editing in Davinci Resolve (in SDR):
Looks dark and desaturated (more desaturated than in default VLC settings). But there is a good article how to transformation to SDR here . The setting below needs the Studio version, but the linked page has also a LUT that could be used in the free version (did not try that one):


Creating a node in Davinci Resolve Studio to tonemap HLG to SDR

I did export the clip like that to h264 8 bit mov file and it was looking good.

d) Editing in Davinci Resolve (in HDR):
No clue how this is working My monitor can do "Baby HDR" with peak brightness of 350cd/m². In Windows I can also enable HDR mode. At the moment I have no need for this, maybe when time comes I have to spend some time here...

Editing on a computer monitor is a major issue as the support of rec2020 gamut is lower than 50% at times so the colors are off

Shooting OM-1 with HLG:
Since I don't have my OM-1 yet, this is something I have to sort out. It will be h265/10-Bit/HLG/150Mbit/sec which is good. I'm a little concerned about the exposure settings: if I remember correctly the video was looking a little dark on the OM-1 screen. Not sure if the Zebras and Histogram will be of value here. In one of the videos I linked above it was said that for skin tones one should use 60% Zebras in HLG (vs. 70% in SDR). So might be more difficult to find the correct exposure in HLG than the normal modes on the OM-1

My first summary:
For Playback everything looks good for me:
Without doing any editing/tonemapping I can play it on my TV in HDR and also in SDR on my PC using VLC (and the OpenGL setting).
It might look like the version on the right of the VLC screenshot on normal SDR TV (but should be OK when e.g. using Plex with HDR->SDR tonemapping).
When I like to edit the Video (in SDR) I create a node in davinci resolve which corrects the brightness and color.

So far so good

My experience with HDR is that HLG is trouble some but may work when you watch stuff by yourself on your tv. The moment you try to share on line software starts to apply conversions that are dependant on your display device and most times the colors are oversaturated while the image is darker than intended. And for this reason I do not use it anymore. There is however an option that does work OK which is to shoot prores raw with an external recorder and then edit in HDR-10 PG which is supported by most computers properly

Enjoy your experiments!

--
instagram http://instagram.com/interceptor121
My flickr sets http://www.flickr.com/photos/interceptor121/
Youtube channel http://www.youtube.com/interceptor121
Underwater Photo and Video Blog http://interceptor121.com
Deer Photography workshops https://interceptor121.com/2021/09/26/2021-22-deer-photography-workshops-in-woburn/

 

[Ergellegre]

my logic is the larger the pixel the wider the colour spectrum is (especially in the shadows), and its been true so far, no editing for me.

Ds

Pretty large pixels on a Canon 5D...

 

[Interceptor121]

my logic is the larger the pixel the wider the colour spectrum is (especially in the shadows), and its been true so far, no editing for me.

Ds

Pretty large pixels on a Canon 5D...

 

[abgestumpft]

While I still wait for my OM-1 to be delivered I was doing some testing with the one HLG movie I have from the touch&try event and also did some more research on HLG.

There is a good overview on HLG topic (inkl. the two linked Youtube videos in it) here:
https://www.cined.com/the-link-between-hdr-sdr-and-hlg-explained/

Plus:

The following is what I understood, so please correct me if I'm wrong:

Difference between SDR and HLG:
SDR (Standard Dynamic Range) has a peak brightness of 100nits and ca. 6.8stops Dynamic Range.

That's a typical misconception fed by ignorance on YouTube. Rec709 establishes a peak brightness of 100 nits and a minimum brightness of 0.1 nits giving an overall contrast ratio of 1000:1 which is 9.96 stops.

I was watching several videos on this and all of them mentioned around 6 stops.

But your argument makes sense
Backed up here under "More Technical details": "CRT monitors raised that to 6 or 7 stops, then LCD and LED monitors raised it to about 10 stops."

The Whitepoint ("white sheet of paper") is at 85-90%
HLG (Hybrid Log Gamma) has a peak brightness 1000nits and ca. 14 stops Dynamic Range. The Whitepoint is at 75%

This is also incorrect HLG can handle 5000 nits however displays can't usually do more than 1000. Typical value are 1000 and 0.005 nits for a total of 14.28 stops

Middle grey is 38% and white is always 90%. note that HLG has two different specs from HK and BBC

When checking Wikipedia here they say:
"HLG is supported in Rec. 2100 with a nominal peak luminance of 1,000 cd/m2 and a system gamma value that can be adjusted depending on background luminance"

HLG over other HDR formats:
When you play other HDR formats on an SDR TV/Monitor the image will look very flat, since it will squeeze the whole HDR range into SDR.
HLG was made to also look good on SDR screens (broadcasting format): it takes the big highlight range of the camera and squashes it down at "the top" of the picture (that is the log part of HLG). It is a log gamma curve at the top (highlights) and the bottom (shadows/midtones) it is more similar to rec709 (SDR). It will look a little darker overall and not that colorful on SDR screens, but still good.

Dynamic Range thoughts:
According to PhotonstoPhotos, the OM-1 has ca. 9.5 stops of DR (in Photo RAW). I guess this is the max. we could get in HLG, maybe less: Would be interesting to see some measurements on this...
My LG C1 OLED has (according to Rtings) Real Scene Highlight: 628 cd/m² = 9.3 stops

OLED Tvs have true blacks and therefore your Tv should be well able to display a contrast ratio of more than 5000 check the specs

Well for OLED LG says because black=0 the contrast ratio ist almost infinite.
But seems my quick and dirty calculation was too quick and too dirty . I thought that when log2(100) gives 6,6stops for SDR this roughly should work for HDR too..

I found now e.g. here and here , that LG claims around 21 stops for their OLEDs

The camera in reality does not produce more than SDR with decent SNR however for editing purposes cameras offer different gamma that offer more dynamic range through various techniques. OM-Log is the only one that does not have an sRGB curve and would be suitable for editing

But shouldn't we get the same DR with HLG and OM-Log (in theory at least)?
Haven't seen any information on this yet, so this is just guessing...
When checking the colorspace of the HLG clip it says: ITU-R BT.2020

My Tests on HDR LG C1 TV:
I tested streaming from my PC via Plex Server and also via USB-Stick. In both cases HLG was detected and the picture looked great. But via USB-Stick (TV only has USB 2.0) the video was choppy (not enough bandwidth).

My Test on SDR Computer Monitor:
a) VLC Player: Playing it directly in VLC looked OK (a little darker), but OK.
But I found a setting hereto use OpenGL and Tone-Mapping: "Reinhard". Then it was looking very good:


VLC: with adjustments (left) and with standard settings (right)

b) Plex Windows Player:
There it looked good (similar to VLC with adjustments) out of the box: with payed plex pass there is option for HDR to SDR Tonemapping that's doing the job.

c) Editing in Davinci Resolve (in SDR):
Looks dark and desaturated (more desaturated than in default VLC settings). But there is a good article how to transformation to SDR here . The setting below needs the Studio version, but the linked page has also a LUT that could be used in the free version (did not try that one):


Creating a node in Davinci Resolve Studio to tonemap HLG to SDR

I did export the clip like that to h264 8 bit mov file and it was looking good.

d) Editing in Davinci Resolve (in HDR):
No clue how this is working My monitor can do "Baby HDR" with peak brightness of 350cd/m². In Windows I can also enable HDR mode. At the moment I have no need for this, maybe when time comes I have to spend some time here...

Editing on a computer monitor is a major issue as the support of rec2020 gamut is lower than 50% at times so the colors are off

But when I do a color space and gamma transformation (as shown in the screenshot above) this should be OK again.
Without that transformation the colors are very flat:


Node disabled -> without color and gamma transformation

Shooting OM-1 with HLG:
Since I don't have my OM-1 yet, this is something I have to sort out. It will be h265/10-Bit/HLG/150Mbit/sec which is good. I'm a little concerned about the exposure settings: if I remember correctly the video was looking a little dark on the OM-1 screen. Not sure if the Zebras and Histogram will be of value here. In one of the videos I linked above it was said that for skin tones one should use 60% Zebras in HLG (vs. 70% in SDR). So might be more difficult to find the correct exposure in HLG than the normal modes on the OM-1

My first summary:
For Playback everything looks good for me:
Without doing any editing/tonemapping I can play it on my TV in HDR and also in SDR on my PC using VLC (and the OpenGL setting).
It might look like the version on the right of the VLC screenshot on normal SDR TV (but should be OK when e.g. using Plex with HDR->SDR tonemapping).
When I like to edit the Video (in SDR) I create a node in davinci resolve which corrects the brightness and color.

So far so good

My experience with HDR is that HLG is trouble some but may work when you watch stuff by yourself on your tv. The moment you try to share on line software starts to apply conversions that are dependant on your display device and most times the colors are oversaturated while the image is darker than intended. And for this reason I do not use it anymore.

I will mainly use the videos for myself. This means they look good on my TV out of the box, and also on my PC using VLC and Plex. When I pass the videos to others I would have to run them through Davinci first to create an SDR video (with node settings shown above)

There is however an option that does work OK which is to shoot prores raw with an external recorder and then edit in HDR-10 PG which is supported by most computers properly

That is more than I'm willing to do . I don't want to use an external recorder and have to grade each video before watching it...
I want best possible "out of the box" video. So in my use case I have either:
1. h265/10-Bit/HLG
2. h264/8-bit/"PictureMode"

This is why I was testing this HLG and think it might work better in my use case thanh264/8-bit/"PictureMode"

Enjoy your experiments!

Thanks for your feedback! I will do some testing with different scenes etc. once the OM-1 arrived...

 

[Interceptor121]

While I still wait for my OM-1 to be delivered I was doing some testing with the one HLG movie I have from the touch&try event and also did some more research on HLG.

There is a good overview on HLG topic (inkl. the two linked Youtube videos in it) here:
https://www.cined.com/the-link-between-hdr-sdr-and-hlg-explained/

Plus:

The following is what I understood, so please correct me if I'm wrong:

Difference between SDR and HLG:
SDR (Standard Dynamic Range) has a peak brightness of 100nits and ca. 6.8stops Dynamic Range.

That's a typical misconception fed by ignorance on YouTube. Rec709 establishes a peak brightness of 100 nits and a minimum brightness of 0.1 nits giving an overall contrast ratio of 1000:1 which is 9.96 stops.

I was watching several videos on this and all of them mentioned around 6 stops.

But your argument makes sense
Backed up here under "More Technical details": "CRT monitors raised that to 6 or 7 stops, then LCD and LED monitors raised it to about 10 stops."

The Whitepoint ("white sheet of paper") is at 85-90%
HLG (Hybrid Log Gamma) has a peak brightness 1000nits and ca. 14 stops Dynamic Range. The Whitepoint is at 75%

This is also incorrect HLG can handle 5000 nits however displays can't usually do more than 1000. Typical value are 1000 and 0.005 nits for a total of 14.28 stops

Middle grey is 38% and white is always 90%. note that HLG has two different specs from HK and BBC

When checking Wikipedia here they say:
"HLG is supported in Rec. 2100 with a nominal peak luminance of 1,000 cd/m2 and a system gamma value that can be adjusted depending on background luminance"

HLG over other HDR formats:
When you play other HDR formats on an SDR TV/Monitor the image will look very flat, since it will squeeze the whole HDR range into SDR.
HLG was made to also look good on SDR screens (broadcasting format): it takes the big highlight range of the camera and squashes it down at "the top" of the picture (that is the log part of HLG). It is a log gamma curve at the top (highlights) and the bottom (shadows/midtones) it is more similar to rec709 (SDR). It will look a little darker overall and not that colorful on SDR screens, but still good.

Dynamic Range thoughts:
According to PhotonstoPhotos, the OM-1 has ca. 9.5 stops of DR (in Photo RAW). I guess this is the max. we could get in HLG, maybe less: Would be interesting to see some measurements on this...
My LG C1 OLED has (according to Rtings) Real Scene Highlight: 628 cd/m² = 9.3 stops

OLED Tvs have true blacks and therefore your Tv should be well able to display a contrast ratio of more than 5000 check the specs

Well for OLED LG says because black=0 the contrast ratio ist almost infinite.
But seems my quick and dirty calculation was too quick and too dirty . I thought that when log2(100) gives 6,6stops for SDR this roughly should work for HDR too..
I found now e.g. here and here , that LG claims around 21 stops for their OLEDs

The camera in reality does not produce more than SDR with decent SNR however for editing purposes cameras offer different gamma that offer more dynamic range through various techniques. OM-Log is the only one that does not have an sRGB curve and would be suitable for editing

But shouldn't we get the same DR with HLG and OM-Log (in theory at least)?
Haven't seen any information on this yet, so this is just guessing...
When checking the colorspace of the HLG clip it says: ITU-R BT.2020

My Tests on HDR LG C1 TV:
I tested streaming from my PC via Plex Server and also via USB-Stick. In both cases HLG was detected and the picture looked great. But via USB-Stick (TV only has USB 2.0) the video was choppy (not enough bandwidth).

My Test on SDR Computer Monitor:
a) VLC Player: Playing it directly in VLC looked OK (a little darker), but OK.
But I found a setting hereto use OpenGL and Tone-Mapping: "Reinhard". Then it was looking very good:


VLC: with adjustments (left) and with standard settings (right)

b) Plex Windows Player:
There it looked good (similar to VLC with adjustments) out of the box: with payed plex pass there is option for HDR to SDR Tonemapping that's doing the job.

c) Editing in Davinci Resolve (in SDR):
Looks dark and desaturated (more desaturated than in default VLC settings). But there is a good article how to transformation to SDR here . The setting below needs the Studio version, but the linked page has also a LUT that could be used in the free version (did not try that one):


Creating a node in Davinci Resolve Studio to tonemap HLG to SDR

I did export the clip like that to h264 8 bit mov file and it was looking good.

d) Editing in Davinci Resolve (in HDR):
No clue how this is working My monitor can do "Baby HDR" with peak brightness of 350cd/m². In Windows I can also enable HDR mode. At the moment I have no need for this, maybe when time comes I have to spend some time here...

Editing on a computer monitor is a major issue as the support of rec2020 gamut is lower than 50% at times so the colors are off

But when I do a color space and gamma transformation (as shown in the screenshot above) this should be OK again.
Without that transformation the colors are very flat:


Node disabled -> without color and gamma transformation

Shooting OM-1 with HLG:
Since I don't have my OM-1 yet, this is something I have to sort out. It will be h265/10-Bit/HLG/150Mbit/sec which is good. I'm a little concerned about the exposure settings: if I remember correctly the video was looking a little dark on the OM-1 screen. Not sure if the Zebras and Histogram will be of value here. In one of the videos I linked above it was said that for skin tones one should use 60% Zebras in HLG (vs. 70% in SDR). So might be more difficult to find the correct exposure in HLG than the normal modes on the OM-1

My first summary:
For Playback everything looks good for me:
Without doing any editing/tonemapping I can play it on my TV in HDR and also in SDR on my PC using VLC (and the OpenGL setting).
It might look like the version on the right of the VLC screenshot on normal SDR TV (but should be OK when e.g. using Plex with HDR->SDR tonemapping).
When I like to edit the Video (in SDR) I create a node in davinci resolve which corrects the brightness and color.

So far so good

My experience with HDR is that HLG is trouble some but may work when you watch stuff by yourself on your tv. The moment you try to share on line software starts to apply conversions that are dependant on your display device and most times the colors are oversaturated while the image is darker than intended. And for this reason I do not use it anymore.

I will mainly use the videos for myself. This means they look good on my TV out of the box, and also on my PC using VLC and Plex. When I pass the videos to others I would have to run them through Davinci first to create an SDR video (with node settings shown above)

There is however an option that does work OK which is to shoot prores raw with an external recorder and then edit in HDR-10 PG which is supported by most computers properly

That is more than I'm willing to do . I don't want to use an external recorder and have to grade each video before watching it...
I want best possible "out of the box" video. So in my use case I have either:
1. h265/10-Bit/HLG
2. h264/8-bit/"PictureMode"

This is why I was testing this HLG and think it might work better in my use case thanh264/8-bit/"PictureMode"

Enjoy your experiments!

Thanks for your feedback! I will do some testing with different scenes etc. once the OM-1 arrived...

For HLG download the technical paper ITU-BT.2020 recommendation everything is explained in there

Good luck



--
instagram http://instagram.com/interceptor121
My flickr sets http://www.flickr.com/photos/interceptor121/
Youtube channel http://www.youtube.com/interceptor121
Underwater Photo and Video Blog http://interceptor121.com
Deer Photography workshops https://interceptor121.com/2021/09/26/2021-22-deer-photography-workshops-in-woburn/

 

[abgestumpft]

One update:
when checking the clip with FFProbe:
Stream #0:0(jpn): Video: hevc (Main 10) (hvc1 / 0x31637668), yuv420p10le(pc, bt2020nc/bt2020/arib-std-b67), 3840x2160 [SAR 1:1 DAR 16:9], 122079 kb/s, 59.94 fps, 59.94 tbr, 180k tbn, 59.94 tbc (default)

So maybe it's better to use this setting in Davinci for Gamma transformation:



I initially tried "Rec 2100 HLG", but that was still looking a little too dark, so I used "Rec 2100 HLG (Scene)" which gives a noticeably brighter image.

"arib-std-b67" looks similar to "Rec 2100 HLG (Scene)" and when comparing the waveforms the shadows/midtones are very similar, but the highlights a compressed a little bit more with "arib-std-b67"

 

[Interceptor121]

One update:
when checking the clip with FFProbe:
Stream #0:0(jpn): Video: hevc (Main 10) (hvc1 / 0x31637668), yuv420p10le(pc, bt2020nc/bt2020/arib-std-b67), 3840x2160 [SAR 1:1 DAR 16:9], 122079 kb/s, 59.94 fps, 59.94 tbr, 180k tbn, 59.94 tbc (default)

So maybe it's better to use this setting in Davinci for Gamma transformation:



I initially tried "Rec 2100 HLG", but that was still looking a little too dark, so I used "Rec 2100 HLG (Scene)" which gives a noticeably brighter image.

"arib-std-b67" looks similar to "Rec 2100 HLG (Scene)" and when comparing the waveforms the shadows/midtones are very similar, but the highlights a compressed a little bit more with "arib-std-b67"

Yes this is what you need to use if you want to permanently convert your HLG footage

--
instagram http://instagram.com/interceptor121
My flickr sets http://www.flickr.com/photos/interceptor121/
Youtube channel http://www.youtube.com/interceptor121
Underwater Photo and Video Blog http://interceptor121.com
Deer Photography workshops https://interceptor121.com/2021/09/26/2021-22-deer-photography-workshops-in-woburn/

 

[Ergellegre]

my logic is the larger the pixel the wider the colour spectrum is (especially in the shadows), and its been true so far, no editing for me.

Ds

Pretty large pixels on a Canon 5D...

Pixel size has nothing to do with quantum efficiency

I don't think Dspider knows this. Interesting thread so I just wanted to get notifications through trollery.

 

[abgestumpft]

Until now I only had this one clip I did during the Touch&Try event. Since my OM-1 arrived I was able to do some (quick) testing with HLG Video.

Here my first impressions/findings:

Image preview on camera:
The HLG looks similar to LOG+View Assist ON (=BT.709 conversion) on the OM-1 Screen/Viewfinder. View Assist is NOT working with HLG, only with LOG.-There are some differences though: the midtones look more contrasty on the HLG preview and the shadows look more flat and a slightly greenish (shadows are more contrasty in the "View Assisted" LOG preview).
The Histogram and Zebras seem to be based on the image preview (e.g. histogram changes when I activate/deactivate the View Assist in LOG mode). And the lowest setting for Zebras is 80, means I cannot select 60 or 70 :-(
So I still need to get a feeling how to do a right exposure manually in HLG.

Watching HLG directly on 4K HDR LG TV:
This is looking great out of the box. I was using auto-exposure and autoWB for my first tests.

Watching HLG directly on SDR Monitor:
Some new findings here: the initial clip I used for testing had not many really dark areas and not many colors: there it worked OK. But now with some clips also in lowlight and with darker areas this has changed a little bit. Seems that on VLC it will only do the gamma correction, but no color space transformation. The Brightness is OK (not perfect though) and especially the shadows look greenish and colors are flat. The same applies to Plex btw: the HDR->SDR tonemapping seems to work with HDR10 content only.


Editing in Davinci Resolve (as SDR):
Using a node with color space transformation as shown here with adjusted setting here plus adding a little contrast is looking very good. No complaints here.

Summary for now:
I still have to find a good way to judge color and brightness when shooting HLG. For brightness I may start with Auto-ISO (that was working good in my tests so far) and then lock the exposure with AEL button during the video to avoid unwanted brightness changes.
Viewing the HLG (without editing) on an SDR monitor does not work as good as I did expect from my initial test, especially the colors are far too muted and off (greenish shadows) to my taste. Maybe there is a player that can do both gamma and colorspace transformation...

 

[Interceptor121]

Until now I only had this one clip I did during the Touch&Try event. Since my OM-1 arrived I was able to do some (quick) testing with HLG Video.

Here my first impressions/findings:

Image preview on camera:
The HLG looks similar to LOG+View Assist ON (=BT.709 conversion) on the OM-1 Screen/Viewfinder. View Assist is NOT working with HLG, only with LOG.-There are some differences though: the midtones look more contrasty on the HLG preview and the shadows look more flat and a slightly greenish (shadows are more contrasty in the "View Assisted" LOG preview).
The Histogram and Zebras seem to be based on the image preview (e.g. histogram changes when I activate/deactivate the View Assist in LOG mode). And the lowest setting for Zebras is 80, means I cannot select 60 or 70 :-(
So I still need to get a feeling how to do a right exposure manually in HLG.

Watching HLG directly on 4K HDR LG TV:
This is looking great out of the box. I was using auto-exposure and autoWB for my first tests.

Watching HLG directly on SDR Monitor:
Some new findings here: the initial clip I used for testing had not many really dark areas and not many colors: there it worked OK. But now with some clips also in lowlight and with darker areas this has changed a little bit. Seems that on VLC it will only do the gamma correction, but no color space transformation. The Brightness is OK (not perfect though) and especially the shadows look greenish and colors are flat. The same applies to Plex btw: the HDR->SDR tonemapping seems to work with HDR10 content only.

Editing in Davinci Resolve (as SDR):
Using a node with color space transformation as shown here with adjusted setting here plus adding a little contrast is looking very good. No complaints here.

Summary for now:
I still have to find a good way to judge color and brightness when shooting HLG. For brightness I may start with Auto-ISO (that was working good in my tests so far) and then lock the exposure with AEL button during the video to avoid unwanted brightness changes.
Viewing the HLG (without editing) on an SDR monitor does not work as good as I did expect from my initial test, especially the colors are far too muted and off (greenish shadows) to my taste. Maybe there is a player that can do both gamma and colorspace transformation...

HLG is a journey that for the wise man ends up with NOT using HLG hahaha

 

[abgestumpft]

Until now I only had this one clip I did during the Touch&Try event. Since my OM-1 arrived I was able to do some (quick) testing with HLG Video.

Here my first impressions/findings:

Image preview on camera:
The HLG looks similar to LOG+View Assist ON (=BT.709 conversion) on the OM-1 Screen/Viewfinder. View Assist is NOT working with HLG, only with LOG.-There are some differences though: the midtones look more contrasty on the HLG preview and the shadows look more flat and a slightly greenish (shadows are more contrasty in the "View Assisted" LOG preview).
The Histogram and Zebras seem to be based on the image preview (e.g. histogram changes when I activate/deactivate the View Assist in LOG mode). And the lowest setting for Zebras is 80, means I cannot select 60 or 70 :-(
So I still need to get a feeling how to do a right exposure manually in HLG.

Watching HLG directly on 4K HDR LG TV:
This is looking great out of the box. I was using auto-exposure and autoWB for my first tests.

Watching HLG directly on SDR Monitor:
Some new findings here: the initial clip I used for testing had not many really dark areas and not many colors: there it worked OK. But now with some clips also in lowlight and with darker areas this has changed a little bit. Seems that on VLC it will only do the gamma correction, but no color space transformation. The Brightness is OK (not perfect though) and especially the shadows look greenish and colors are flat. The same applies to Plex btw: the HDR->SDR tonemapping seems to work with HDR10 content only.

Editing in Davinci Resolve (as SDR):
Using a node with color space transformation as shown here with adjusted setting here plus adding a little contrast is looking very good. No complaints here.

Summary for now:
I still have to find a good way to judge color and brightness when shooting HLG. For brightness I may start with Auto-ISO (that was working good in my tests so far) and then lock the exposure with AEL button during the video to avoid unwanted brightness changes.
Viewing the HLG (without editing) on an SDR monitor does not work as good as I did expect from my initial test, especially the colors are far too muted and off (greenish shadows) to my taste. Maybe there is a player that can do both gamma and colorspace transformation...

HLG is a journey that for the wise man ends up with NOT using HLG hahaha

I really want to like it: it looks great out of camera on the HDR TV.
In case I find a player for Windows that does the color and gamma conversion to SDR right, then this still can be a good option. Also the h265@25fps (both HLG and LOG) has much more detail than h264 or h265@60fps...

 

[Interceptor121]

Until now I only had this one clip I did during the Touch&Try event. Since my OM-1 arrived I was able to do some (quick) testing with HLG Video.

Here my first impressions/findings:

Image preview on camera:
The HLG looks similar to LOG+View Assist ON (=BT.709 conversion) on the OM-1 Screen/Viewfinder. View Assist is NOT working with HLG, only with LOG.-There are some differences though: the midtones look more contrasty on the HLG preview and the shadows look more flat and a slightly greenish (shadows are more contrasty in the "View Assisted" LOG preview).
The Histogram and Zebras seem to be based on the image preview (e.g. histogram changes when I activate/deactivate the View Assist in LOG mode). And the lowest setting for Zebras is 80, means I cannot select 60 or 70 :-(
So I still need to get a feeling how to do a right exposure manually in HLG.

Watching HLG directly on 4K HDR LG TV:
This is looking great out of the box. I was using auto-exposure and autoWB for my first tests.

Watching HLG directly on SDR Monitor:
Some new findings here: the initial clip I used for testing had not many really dark areas and not many colors: there it worked OK. But now with some clips also in lowlight and with darker areas this has changed a little bit. Seems that on VLC it will only do the gamma correction, but no color space transformation. The Brightness is OK (not perfect though) and especially the shadows look greenish and colors are flat. The same applies to Plex btw: the HDR->SDR tonemapping seems to work with HDR10 content only.

Editing in Davinci Resolve (as SDR):
Using a node with color space transformation as shown here with adjusted setting here plus adding a little contrast is looking very good. No complaints here.

Summary for now:
I still have to find a good way to judge color and brightness when shooting HLG. For brightness I may start with Auto-ISO (that was working good in my tests so far) and then lock the exposure with AEL button during the video to avoid unwanted brightness changes.
Viewing the HLG (without editing) on an SDR monitor does not work as good as I did expect from my initial test, especially the colors are far too muted and off (greenish shadows) to my taste. Maybe there is a player that can do both gamma and colorspace transformation...

HLG is a journey that for the wise man ends up with NOT using HLG hahaha

I really want to like it: it looks great out of camera on the HDR TV.
In case I find a player for Windows that does the color and gamma conversion to SDR right, then this still can be a good option. Also the h265@25fps (both HLG and LOG) has much more detail than h264 or h265@60fps..

The issue is right there no software supports HLG which has remained really a BBC only feature (and Hong Kong Tv which we do not care)

You cannot do a real time conversion of a video color space it is not that trivial you need to re-encode it

HLG is a compromise format that derives from the old video trick of knee setting much better to work in PQ

I would test the OMLOG and the so called flat profile. Unfortunately Olympus photo styles are way too saturated and sharpened it is ok for the occasional jpeg but video look really too artificial