pgb

pgb

Lives in Australia Sydney, Australia
Works as a Video editor / Technical Director
Joined on Sep 7, 2003
About me:

Take more photos and switch off the computer.

Comments

Total: 275, showing: 1 – 20
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In reply to:

dennis tennis: Apple innovations lies in squeezing the most profit. That's their genius. There's ten thousand new suckers born every minute. Praise the Lord! God Bless Apple.

Howabout, no I stuck with XP pro through those releases, never jump in until its been proven. I couldn't understand the belly aching about 8.1, just click desktop and your back to V7 as far as I could see.

Link | Posted on Apr 6, 2017 at 16:43 UTC
In reply to:

RMGoodLight: Sorry to troll, but why does this news belong here on DPREVIEW?

Also some cameras can now shoot video, even 4K as well as stills and require an electric computer to process it.

Link | Posted on Apr 6, 2017 at 16:31 UTC
In reply to:

Kabe Luna: Apple would benefit from the realization that these are creative tools not art objects. At the end of the day, these things need to be practical.

Please, no more innovation, just catch up and use the old box and fill it with the best off the shelf technology, how hard is it as a lot of people make hackintoshes.
Lock Jonny in the sandpit and tell him to make some new watchbands and let the engineers do what engineers do.

Link | Posted on Apr 5, 2017 at 18:03 UTC
In reply to:

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

Years ago the Sony F828 had an RGBE sensor (emerald) giving more greens but there was issues with it.

Link | Posted on Mar 30, 2017 at 17:00 UTC
In reply to:

knickerhawk: Kudos to Richard and the others who helped him put together this piece that does an excellent job of explaining a difficult topic. Would it be too much to ask for a follow-on article about the software dimension of the problem - i.e., differences in demosaicing algorithms, deconvolution and related postprocessing strategies for minimizing and repairing the unwanted effects of aliasing (and anti-aliasing)? That would be genuinely helpful.

Also, using Siemens star crops from your studio scene test shots for your examples makes sense, but there was a lost opportunity to explicate and illustrate the common "false detail" effect of aliasing by including some magnified crops from the etching of the Dutch family in the DPR studio scene.

I've often wondered about the processing power and compromises made to de-bayer realtime in camera for video capture. With the Red camera you have several quality options in post to make it play at speed when grading. To use Full de-bayer you need a good GPU or a Red Rocket card that is really a dedicated GPU. The more time it spent guessing the missing colours the better. Back in 2008 rendering Red raw using a workstation cpu would take several seconds per frame at full quality.

I doubt these can fit inside a camera yet.

Link | Posted on Mar 30, 2017 at 16:45 UTC
In reply to:

TN Args: Are you using the term 'colour resolution' properly? I thought it was measured in bit depth. The ability to resolve colour accuracy.

Resolution is really about the number of pixels and bit depth determines the colour palette. Just 10bit has almost no banding with shots and grades that are prone to it.

Link | Posted on Mar 30, 2017 at 16:26 UTC
In reply to:

Richard Murdey: "very few people would be happy with a filter that blurred the resolution down to 1/4 of the pixel height"

Perhaps not, but that's close to how many of the photos we look at these days are presented to us: 24-36~50? MP sensors downsampled to view on, at best, 8-10 MP screens.

I've long wondered why no one offered a "purist option" in-camera setting where each Bayer RGBG 4-pixel cell of a 24 MP sensor was mapped to a single RGB "pixel" to give a 6 MP image file. Like Pentax pixel shift mode but without the pixel shift...

Richard, Sony actually made a single RGB sensor on one of their early cine cameras, I think it was the Genesis so it's possible. It was only HD therefore only needed a 6mpx or maybe 8mpx sensor that was doable at the time with high quality.
I remember the rep at the trade show saying, `no bayer here, full RGB'. I think there was issues with Bayer and video back then and only consumer cameras were Bayer. Prior to this all pro video cams were 3 chip RGB capture but with larger sensors this became huge, required a big dichroic block and more critical physical alignment. 3 x 2/3" sensor broadcast cameras are still alive and well making 20:1 constant f1.4 zooms possible.
Good article DPR.

Link | Posted on Mar 30, 2017 at 16:07 UTC
On article These are the four cameras that won Oscars in 2017 (112 comments in total)
In reply to:

silentstorm: I'm wondering what does DPR mean by "true" RAW recording? Care to elaborate further? Sony seems to be the only one saying their F55 & F65 can record true 16bit RAW for video with wider than film colour gamut. Really curious to know more detail about "true" here.

Thanks.

422 also designates the amount of colour sub sampling and I was comparing Sony's 4K colour sub sampling to it. A Bayer sensor could be described as a 211 device in luminance and chroma samples.

Link | Posted on Mar 5, 2017 at 19:14 UTC
On article These are the four cameras that won Oscars in 2017 (112 comments in total)
In reply to:

silentstorm: I'm wondering what does DPR mean by "true" RAW recording? Care to elaborate further? Sony seems to be the only one saying their F55 & F65 can record true 16bit RAW for video with wider than film colour gamut. Really curious to know more detail about "true" here.

Thanks.

`The previous generation of Sony CineAlta CCD-based Super 35mm cameras used linear RGB pattern'

Like Foveon RGB capture but with a one plane sensor. 3x CCD cameras also captured RGB but it was recorded in 422.

`To maintain the high resolution in green in all directions, including diagonal one, Sony proposes a new Q67 pattern for new 4K camera systems'

This looks like a 422 compromise for 4K but still more than Bayer.
http://image-sensors-world.blogspot.com.au/2010/12/sony-cinealta-moves-beyond-bayer.html

Link | Posted on Feb 28, 2017 at 20:33 UTC
In reply to:

Chaitanya S: just looked at preview, pretty impressive what Fuji is doing in camera business.

Fuji (and Canon) have been doing this for a long time -
http://www.fujifilm.com/products/optical_devices/tv_cine/studio_field/

Link | Posted on Feb 22, 2017 at 14:30 UTC
In reply to:

Ebrahim Saadawi: Such great lenses with great prices. So bumped I can't use them on my 5DIV or anything other than the restrictive E mount.

They do state E-mount/short flange distance "enable the compact, lightweight design" so these lenses would be considerablly different if made for DSLRs, is the most likely case scenario.

Still. A bit sad. Fujinon Zooms for Still glass prices! and it's f/2.8 constant. Bummer.

Yes very sporting prices and it looks like Fuji focus, zoom and iris servos will bolt straight on. Why aren't all serious lenses calibrated in T stops, bad for marketing I guess?

Link | Posted on Feb 22, 2017 at 14:27 UTC
On article CES 2017: Hands-on with the Kodak Super 8 (426 comments in total)
In reply to:

Mark Turney: Well, we live in an analog universe so it's no wonder to me why digital tends to "feel" wrong. But I'm also not sure that going back to a old technology is the answer, especially considering that Kodak digitizes the film from what I understand, looping us right back to that which we seek to avoid.

Anyway .... just some food for thought 💭

This is a digital sensor but when and if it becomes a commercial reality remains to be seen. DR would only be limited by how many photons it could count over time.
https://petapixel.com/2015/10/12/cmos-inventor-working-on-gigapixel-sensor-that-can-detect-single-photons/

Link | Posted on Jan 10, 2017 at 06:32 UTC
On article CES 2017: Hands-on with the Kodak Super 8 (426 comments in total)
In reply to:

Mark Turney: Well, we live in an analog universe so it's no wonder to me why digital tends to "feel" wrong. But I'm also not sure that going back to a old technology is the answer, especially considering that Kodak digitizes the film from what I understand, looping us right back to that which we seek to avoid.

Anyway .... just some food for thought 💭

but sensors are analogue devices.

Link | Posted on Jan 9, 2017 at 18:29 UTC
On article CES 2017: Hands-on with the Kodak Super 8 (426 comments in total)
In reply to:

joel avery: <sigh> Thought the headline meant Kodak was releasing an 8k video cam. That would've truly been a Super-8.

What would 8mm resolution be? Lets be optimistic and say 35mm is 5k and 8mm has a 6mm frame.
6mm / 36mm x 5000 = 833 pixels, a bit more than standard def, 720px. Of course there is the film look to offset this.

Link | Posted on Jan 9, 2017 at 18:22 UTC
In reply to:

AlanG: I see the heart of the innovation being the control dial that makes using a stylus more efficient. With that being part of the operating system and programs I would expect to see similar products from other manufacturers before long. Why not 10"- 20" tablets that works this way on their own, but that can also be linked to another monitor?

I wonder how many dials it can support ?

Link | Posted on Jan 7, 2017 at 18:48 UTC

It would be good for controlling an audio mixer etc, lots of other applications beyond graphics.

Link | Posted on Jan 7, 2017 at 01:03 UTC as 22nd comment
On article Modern Mirrorless: Canon EOS M5 Review (1633 comments in total)
In reply to:

rfsIII: If a camera doesn't offer waveform monitors and RGB parade for video in this day and age it is a total fail and not worth anyone's time.

Does it have a histogram, how do you expose for video?

Link | Posted on Dec 21, 2016 at 21:19 UTC
In reply to:

sawks1: So far i'm quite impressed with it especially for £29.99 and yes there are a few laggy moments but to be honest i have also experienced issues with photoshop. There are several things i like such as de-hazing and how you can jump back and forwards from the photo persona i.e the photoshop part and the raw developing part so easily. It also allows plugins though not sure how many of them are compatible Googles Nik collection seems to be so far. Over all not a bad fully featured raw processor and editing software for the price.

Just got the Win version, it looks like a great set of tools. The 3D transforms are far more realistic since it's built on a more contemporary foundation than PS.

It seems quite responsive on a 2010 quad core i5 Dell laptop so it should be fast on my desktop. Imagine what v3 of this will look like, well worth supporting.

Link | Posted on Dec 18, 2016 at 10:09 UTC
In reply to:

Reactive: It's astonishing how that silly little rotting apple logo still controls the foolish. I showed my daughter [14, owns a very thin Toshiba Windows 10 laptop] this new MacBook. Naturally as soon as she saw the logo she thought it was a dream machine... until I told her what it didn't do (SD cards, USB sticks) and then the funniest bit, the price... at least triple the cost of her Toshiba. "Oh, that's just really stupid," was all she said, and wandered off.

Apple, their a byte short.

Link | Posted on Nov 13, 2016 at 16:28 UTC
In reply to:

AlanG: For quite a while it has been clear that maximizing profits is Apple's goal and the needs of creative professionals is not a priority. By comparison, it took a while but Microsoft's Surface Studio indicates that Microsoft now wants to fill that role and is more than capable enough to do it.

Xero, USB3 is 5000mbps, Prores HQ HD, a high end mastering format is 220mbps. For UHD x4 = 880mbps, there's still plenty of headroom there for USB3 in post.

Link | Posted on Nov 8, 2016 at 00:44 UTC
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