Iliah Borg

Lives in United States AK, United States
Has a website at http://www.libraw.org/
Joined on Nov 11, 2002

Comments

Total: 131, showing: 1 – 20
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On article Updated: Sony a9 samples with Raw support (450 comments in total)
In reply to:

joe_leads: Why is always Adobe software used to edit the RAWs? Capture One is Sony's preferred software, CO has a strong emphasis on good color calibration, and when people complain about "bad Sony colors", my impression is that it always comes from Adobe software, but not Capture One.

@meanwhile Nor did I say you did. Just an observation on how good in fact is cooperation between SONY and Capture One Team.

Link | Posted on May 8, 2017 at 00:20 UTC
On article Updated: Sony a9 samples with Raw support (450 comments in total)
In reply to:

vadims: Bringing in (and using) a gray card would have been nice.

I'm generally OK with "processing to taste", but not when green cast is replaced with magenta cast, as is the case with the first image. Having a gray card would have removed an unnecessary variable.

As to the second sample (tennis), I'm a bit surprised you draw attention to the background track: the biggest difference (to me) is the table color, which looks almost purple on the OOC JPEG, while (properly?) blue on RAW conversion. But... the biggest difference in perception comes from the increased contrast of the second (processed RAW) image; I have a feeling we're comparing apples to oranges here.

Getting WB right by the camera *is* important, whatever folks relying on PP-only WB adjustments of their RAWs might think; it's a a big extra bonus that should not be underestimated. Hence properly testing it is important. So, DPR team, please do bring gray card next time ;-)

@rfsIII With flickering lights and 1/1000 white balance changes between the shots.

Link | Posted on May 8, 2017 at 00:04 UTC
On article Updated: Sony a9 samples with Raw support (450 comments in total)
In reply to:

joe_leads: Why is always Adobe software used to edit the RAWs? Capture One is Sony's preferred software, CO has a strong emphasis on good color calibration, and when people complain about "bad Sony colors", my impression is that it always comes from Adobe software, but not Capture One.

@meanwhile: Right. You can do the same with any converter. The point that "Capture One is Sony's preferred software" is rather moot, no?

Link | Posted on May 7, 2017 at 23:46 UTC
On article Updated: Sony a9 samples with Raw support (450 comments in total)
In reply to:

vadims: Bringing in (and using) a gray card would have been nice.

I'm generally OK with "processing to taste", but not when green cast is replaced with magenta cast, as is the case with the first image. Having a gray card would have removed an unnecessary variable.

As to the second sample (tennis), I'm a bit surprised you draw attention to the background track: the biggest difference (to me) is the table color, which looks almost purple on the OOC JPEG, while (properly?) blue on RAW conversion. But... the biggest difference in perception comes from the increased contrast of the second (processed RAW) image; I have a feeling we're comparing apples to oranges here.

Getting WB right by the camera *is* important, whatever folks relying on PP-only WB adjustments of their RAWs might think; it's a a big extra bonus that should not be underestimated. Hence properly testing it is important. So, DPR team, please do bring gray card next time ;-)

With shutter speed 1/1000 and FL flicker lights grey card is of little help unless it is in the scene for the shot you are white-balancing.

Link | Posted on May 7, 2017 at 23:23 UTC
On article Updated: Sony a9 samples with Raw support (450 comments in total)
In reply to:

joe_leads: Why is always Adobe software used to edit the RAWs? Capture One is Sony's preferred software, CO has a strong emphasis on good color calibration, and when people complain about "bad Sony colors", my impression is that it always comes from Adobe software, but not Capture One.

Capture One is using their own profiles for SONY, and I've seen cases when they rendered colour worse than the out-of-camera JPEG. Correct colour in ACR:
https://www.rawdigger.com/sites/www.rawdigger.com/files/Figure6_Sony_a6500_Embedded_ACR_CaptureOne_blue_areas.jpeg

Link | Posted on May 7, 2017 at 23:20 UTC
In reply to:

rfsIII: Am I misreading this caption: "This image was shot at the same nominal resolution but with red, green and blue information captured for each output pixel"
To me it sounds like the author shot the RG&B separately on a monochrome sensor (perhaps using colored filters as in olden days?)
And also, why the secrecy about which camera makers rotate their sensors 45 degrees?

@mgrum
No, Fujifilm never rotated their sensors.

Link | Posted on Mar 29, 2017 at 21:14 UTC
In reply to:

forpetessake: They haven't mentioned RBGW CFA which are soon to come to the next camera near you.

RGBW, that's Banning's prior art, US 2,755,334.

Link | Posted on Mar 29, 2017 at 19:12 UTC
In reply to:

Fujica: Wow wow wow, touting on X-Trans and forgetting to mention that it is much better in fighting moire.

There are advantages to bayer
So there are also advantages of X-Trans.

They each also have their disadvantage.
One is not really better then the other even though this post suggests so.

There is a lot of misconception of X-Trans and the problems of the past have mostly been resolved. Because indeed its more difficult to read out the sensor and there are methods needed to get the sharpening right. There is just a little learning curve to go through, because it is different.

Then on the other hand many people fall for the colours of Fujifilm... How come.

I know there is going to be a lot of trolling on this post.
But I am sure they never really dug into this matter - It will be mostly all hear say.

X-Trans is covered by Bayer patent ;)

Link | Posted on Mar 29, 2017 at 15:03 UTC
In reply to:

mvmv: Hmmm… how about highlight recovery test?

@panos_m: " just because there are differences in camera light-meters calibration" -- yet another reason is when less green is allowed into red and blue channels (narrower red and blue filters in CFA).

Link | Posted on Sep 1, 2016 at 15:52 UTC
On article Hands-on with Hasselblad X1D (805 comments in total)
In reply to:

Satyaa: I am not familiar with the Hassy or other MF cameras, and I am curious about the mode dial.
What is the Mq mode and the other two modes between 'P' and 'C3'?
I can't tell if that last one is movie icon.
Thanks.

Quiet, video, bulb, and 3 custom.

Link | Posted on Jun 23, 2016 at 00:17 UTC
In reply to:

pcinhk: As the list of supported Raw cameras is the same as in FastRawViewer (http://www.fastrawviewer.com) it's my guess On1 may be using the LibRaw library.
FastRawViewer, is as its name suggests - check out their videos. it might give a hint as to what could be possible in On1 Photo 11.
LibRaw co-incidentally recently announced a new stable version on 21 April.

Current version of On1 PerfectBrowse is using LibRaw.

We have not seen On1 RAW yet, and can't tell if it is using LibRaw or not.

FastRawViewer is no indication of what could be possible with On1 RAW, we take no responsibility neither for the speed of On1 products, nor for any features / performance / stability issues.

Link | Posted on Apr 29, 2016 at 15:40 UTC
In reply to:

Joe Ogiba: I would prefer the Yuneec TORNADO H920 Multi-Rotor hex-copter with MFT or full frame 4K Sony A7s II low light camera.
https://www.youtube.com/watch?v=b_YIzSdBbUU

@Mike Ronesia : Thank you, files are downloaded.

Link | Posted on Apr 4, 2016 at 13:22 UTC
In reply to:

krmuir: A bit disappointed by the results here - ISO 3M offered a little hope that a high ISO breakthrough was on the cards for those that really need it. As a user of A7RII ISO 100000 is completely unusable. I don't see much in the way of improvement here

@krmuir : with about 3 electrons per pixel at saturation?

Link | Posted on Mar 28, 2016 at 14:23 UTC

The black level, starting from Hi 2, is completely uncontrolled. Linearity seems to be lost, too.

Link | Posted on Mar 28, 2016 at 13:40 UTC as 131st comment | 1 reply
In reply to:

Joe Ogiba: I would prefer the Yuneec TORNADO H920 Multi-Rotor hex-copter with MFT or full frame 4K Sony A7s II low light camera.
https://www.youtube.com/watch?v=b_YIzSdBbUU

@Mike Ronesia : Thank you very much in advance.

Link | Posted on Mar 27, 2016 at 02:55 UTC
In reply to:

Joe Ogiba: I would prefer the Yuneec TORNADO H920 Multi-Rotor hex-copter with MFT or full frame 4K Sony A7s II low light camera.
https://www.youtube.com/watch?v=b_YIzSdBbUU

@Mike Ronesia : Could you please upload a sample raw file from CGO4? We would love to support this camera in FastRawViewer and provide you with a free license ;) My e-mail is ib@pochtar.com

Link | Posted on Mar 26, 2016 at 14:13 UTC
On article Retro through-and-through: Fujifilm X-Pro2 Review (2485 comments in total)
In reply to:

nerd2: Fake ISO helps.

@nerd2 : yes, myth. 1. read ISO standard. 2. compare raw data.

Link | Posted on Jan 27, 2016 at 01:39 UTC
On article Retro through-and-through: Fujifilm X-Pro2 Review (2485 comments in total)
In reply to:

nerd2: Fake ISO helps.

@nerd2 : Funny myth.

Link | Posted on Jan 26, 2016 at 11:31 UTC
On article Retro through-and-through: Fujifilm X-Pro2 Review (2485 comments in total)
In reply to:

zeinali: Just looking at colorful jackets of four men, immediately you could find
some kind of process even at ISO-200 in RAW images.

@Barney Britton : Many thanks. We will add this compression scheme to LibRaw, will probably take some time to decode. Uncompressed files are already supported, also in RD and FRV.

Link | Posted on Jan 26, 2016 at 02:35 UTC
On article Retro through-and-through: Fujifilm X-Pro2 Review (2485 comments in total)
In reply to:

zeinali: Just looking at colorful jackets of four men, immediately you could find
some kind of process even at ISO-200 in RAW images.

@ Barney Britton : would appreciate a compressed raw sample for studio scene shot, if possible.

Link | Posted on Jan 25, 2016 at 21:56 UTC
Total: 131, showing: 1 – 20
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