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Author Topic: WOW, 5D III shadow recovery!!  (Read 5779 times)

jrista

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WOW, 5D III shadow recovery!!
« on: March 02, 2012, 04:17:48 PM »
I was browsing through some of the 5D III sample shots from CPN Europe. I came across this one, which appears to be an in-camera  multi-exposure JPEG.

http://cpn.canon-europe.com/files/education/technical/inside_canon_eos_5d_mark_iii/17_cinc_big.jpg

I was curious if there was any fixed-pattern read noise (banding noise) in the silhouetted parts of the image, so I downloaded it and started adjusting levels in Photoshop. The image below is a composite of two strips that have mid-gray levels adjusted by 3.4, next to two strips of the original image. I am blown away at the black recovery the 5D III has to offer!!! :o I mean, WOW:



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WOW, 5D III shadow recovery!!
« on: March 02, 2012, 04:17:48 PM »

jrista

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Re: WOW, 5D III shadow recovery!!
« Reply #1 on: March 02, 2012, 05:33:59 PM »
Wow, seriously...no one has any comments?
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Daniel Flather

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Re: WOW, 5D III shadow recovery!!
« Reply #2 on: March 02, 2012, 05:37:35 PM »
Wow, seriously...no one has any comments?


I looks like it's epic omg lol zomgers!

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jrista

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Re: WOW, 5D III shadow recovery!!
« Reply #3 on: March 02, 2012, 05:41:08 PM »
Wow, seriously...no one has any comments?


I looks like it's epic omg lol zomgers!

Heh...honestly, I was expecting something more along the lines of: "D3s/D700 is still better. Check this image out <yaddayaddaimglink>".
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Daniel Flather

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Re: WOW, 5D III shadow recovery!!
« Reply #4 on: March 02, 2012, 05:45:07 PM »
Wow, seriously...no one has any comments?


I looks like it's epic omg lol zomgers!

Heh...honestly, I was expecting something more along the lines of: "D3s/D700 is still better. Check this image out <yaddayaddaimglink>".


No, no, you want the omg it's too expensive but I never was gonna buy it anyways!! omg canon failz0r
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Tuggem

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Re: WOW, 5D III shadow recovery!!
« Reply #5 on: March 02, 2012, 06:05:16 PM »
I'm impressed by what I see.
Just not sure of what conclusions to make if it was a multi exposure to start with?

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Re: WOW, 5D III shadow recovery!!
« Reply #6 on: March 02, 2012, 06:07:30 PM »
Looking forward to multi exposure. - the composite looks impressive.
I kinda like the concept of the photo multi exposure you've made to in a stylistic way :)

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Re: WOW, 5D III shadow recovery!!
« Reply #6 on: March 02, 2012, 06:07:30 PM »

jrista

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Re: WOW, 5D III shadow recovery!!
« Reply #7 on: March 02, 2012, 06:22:29 PM »
I'm impressed by what I see.
Just not sure of what conclusions to make if it was a multi exposure to start with?

Hmm, thats actually a good point...stacking shots and blending them could lower noise.
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jrista

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Re: WOW, 5D III shadow recovery!!
« Reply #8 on: March 02, 2012, 06:23:18 PM »
Looking forward to multi exposure. - the composite looks impressive.
I kinda like the concept of the photo multi exposure you've made to in a stylistic way :)

Oh, its not mine. Its just one of the sample shots from Canon's site, I just tweaked the exposure a bit while I was looking for banding noise, and discovered there was a LOT of color detail in all the original black.
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Kernuak

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Re: WOW, 5D III shadow recovery!!
« Reply #9 on: March 02, 2012, 07:00:06 PM »
I did glance at that one earlier in my quest to look for the high ISO samples, then didn't look any harder at it when it was "only" ISO 400. It's difficult to be sure in JPEGs, but I'm leaning towards a two stop improvement. I'd even be interested in seeing some ISO 25600 shots without the heavy in camera noise reduction, as I think they could look alot better than the sample does. It is certainly impressive, but not entirely a surprise to me, as I was think about the 7D, the native was basically two stops higher than I'd like to push it, so working on the same principal, I was thinking the MkIII might be two stops better than the MkII. I also saw much more random noise in the 7D than in previous cameras and less banding.
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jrista

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Re: WOW, 5D III shadow recovery!!
« Reply #10 on: March 02, 2012, 07:09:08 PM »
I did glance at that one earlier in my quest to look for the high ISO samples, then didn't look any harder at it when it was "only" ISO 400. It's difficult to be sure in JPEGs, but I'm leaning towards a two stop improvement. I'd even be interested in seeing some ISO 25600 shots without the heavy in camera noise reduction, as I think they could look alot better than the sample does. It is certainly impressive, but not entirely a surprise to me, as I was think about the 7D, the native was basically two stops higher than I'd like to push it, so working on the same principal, I was thinking the MkIII might be two stops better than the MkII. I also saw much more random noise in the 7D than in previous cameras and less banding.

Aye, I really want to see some RAW samples myself...JPEG kind of muddies the picture a bit (sorry for the pun.) We don't really know how much noise reduction and other fancywork is being done in-camera for these sample JPEGS.

The 7D still has banding noise, its just not as strong as on the 5D II (the 7D generates about 9 electrons worth of read noise while the 5D II generates about 27 electrons.) Based on the jpegs, I'd say the 5D II (and probably the 1D X) produce as little read noise as Sony Exmor sensors now (which is about 3 electrons worth)...I've cranked the exposure up on every dark and high ISO shot from all the 5D III samples I could find, and there isn't a trace of banding noise in any of them. Cranking up exposure on my 7D, it doesn't take long to start seeing banding in shadowed areas, and it really destroys detail where SNR is lower.

One thing I have noticed in the 5D III shots, though, is quite a bit of color blotchieness in low SNR areas. This was a problem before on Canon sensors, and it still seems to be a problem, although its not bad enough to really affect most work until you hit about ISO 6400...which is definitely an improvement. On my 7D, it starts to intrude at about ISO 1600, and is really bad by ISO 6400. Sony Exmor sensors still seem to do a better job on this front (D3s 12800 photos exhibit random noise but very, very little color noise.)
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Mt Spokane Photography

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Re: WOW, 5D III shadow recovery!!
« Reply #11 on: March 02, 2012, 08:36:10 PM »
I downloaded the original jpeg files from all the ISO settings on DPR, and tried pulling up the blacks.  Even with the slider all the way, there was no banding, I was quite amazed.  Canon has really worked on the blacks and the ability to pull out detail.

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Re: WOW, 5D III shadow recovery!!
« Reply #12 on: March 03, 2012, 04:27:42 PM »
It was making me a little nervous that CW and other Canon spokesmen spent a lot of time talking about  at least two stops of high ISO improvement, but none of them was actually addressing the matter of dynamic range, which for me is of greater interest than simple high-ISO capabilities. Likewise, the new HDR feature, while admittedly very intriguing in its own right, had me wondering if maybe Canon had given up trying to match the DR of Sony's Exmor sensors. We really do need some definitive testing on IQ, but as little bits and pieces emerge about the 5D3's performance, it's looking more encouraging all the time. Maybe I really do need one now rather than later.

Oh, and  jrista, you have a history of introducing slow-starting threads.

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Re: WOW, 5D III shadow recovery!!
« Reply #12 on: March 03, 2012, 04:27:42 PM »

LetTheRightLensIn

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Re: WOW, 5D III shadow recovery!!
« Reply #13 on: March 03, 2012, 05:19:46 PM »
You can't really tell until you see the RAWs.

Although at high iso it seems like there is a decent chance they did get rid of the banding.

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Re: WOW, 5D III shadow recovery!!
« Reply #14 on: March 03, 2012, 05:29:29 PM »
You can't really tell until you see the RAWs.

Although at high iso it seems like there is a decent chance they did get rid of the banding.

Yes, I'm waiting for them. I am a bit skeptical, but hopeful.

However, I would expect to extract better performance out of a raw, and the jpegs already surpass my 5D MK II raws by quite a jump.


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Re: WOW, 5D III shadow recovery!!
« Reply #14 on: March 03, 2012, 05:29:29 PM »