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FORUMS General Gear Talk Camera Vs. Camera
Thread started 06 May 2016 (Friday) 01:02
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1DX2 vs 1DX comparison (exposure/shadow pushing)

 
jwcdds
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Post has been edited over 1 year ago by jwcdds.
May 06, 2016 01:02 |  #1

Was going to throw these into the 1DX2 photo/discussion thread, but I felt this was better served with its own thread so that any pertinent discussions on the subject/topic would not clutter the other thread. So here it is, testing out the iso100 shadow recovery/and exposure pushing to see what differences/improvemen​ts (if any) Canon has made in the 1DX successor.

IMAGE: https://photos.smugmug.com/Misc/Gear/i-WfWMJbw/0/XL/20160505-Canon%20EOS%207D%20Mark%20II-7D2_5432-XL.jpg

Test image scene: I left profile as Adobe Standard, I adjusted the color temp to 6000K for both images.
iso100, f/2.8, 1/50s

IMAGE: https://photos.smugmug.com/Misc/1DX2-vs-1DX/i-pgpJZBh/0/XL/20160505-Canon%20EOS-1D%20X%20Mark%20II-1DX20002-XL.jpg

In Manual mode, I then increased the shutterspeed by 5-stops, hence deliberately under-exposing the scene by 5-stops:
iso100, f/2.8, 1/1000s

IMAGE: https://photos.smugmug.com/Misc/1DX2-vs-1DX/i-SVpHPQt/0/XL/20160505-Canon%20EOS-1D%20X%20Mark%20II-1DX20006-XL.jpg

Then I selected 3 points of interest to compare:
IMAGE: https://photos.smugmug.com/Misc/1DX2-vs-1DX/i-mvc5MCL/0/XL/1dx2vs1dx_01-XL.jpg
IMAGE: https://photos.smugmug.com/Misc/1DX2-vs-1DX/i-75dShDn/0/XL/1dx2vs1dx_02-XL.jpg
IMAGE: https://photos.smugmug.com/Misc/1DX2-vs-1DX/i-JSxq8V4/0/XL/1dx2vs1dx_03-XL.jpg

Julian
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jwcdds
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Post has been edited over 1 year ago by jwcdds.
May 06, 2016 01:02 |  #2

I adjusted +100 shadows and +100 blacks on the slider (but kept EV @ 0):

IMAGE: https://photos.smugmug.com/Misc/1DX2-vs-1DX/i-F6NBFVS/0/XL/1dx2vs1dx_07-XL.jpg
IMAGE: https://photos.smugmug.com/Misc/1DX2-vs-1DX/i-BSK8GZM/0/XL/1dx2vs1dx_08-XL.jpg
IMAGE: https://photos.smugmug.com/Misc/1DX2-vs-1DX/i-BmgJ23q/0/XL/1dx2vs1dx_09-XL.jpg

Then I set sliders back to 0, but bumped exposure by +5 stops:
IMAGE: https://photos.smugmug.com/Misc/1DX2-vs-1DX/i-GMBHXHf/0/XL/1dx2vs1dx_04-XL.jpg
IMAGE: https://photos.smugmug.com/Misc/1DX2-vs-1DX/i-K4jr23h/0/XL/1dx2vs1dx_05-XL.jpg
IMAGE: https://photos.smugmug.com/Misc/1DX2-vs-1DX/i-C2Cn7sJ/0/XL/1dx2vs1dx_06-XL.jpg

Julian
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jwcdds
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Post has been edited over 1 year ago by jwcdds.
May 06, 2016 01:02 |  #3

high ISO RAW comparison. iso 6400, 12800, 25600, 51200, h1 (102400)

The results of this test were not quite what I had expected.

IMAGE: https://photos.smugmug.com/Misc/1DX2-vs-1DX/i-2k6VrQW/0/XL/1dx2vs1dx_10-XL.jpg
IMAGE: https://photos.smugmug.com/Misc/1DX2-vs-1DX/i-Zw9vkJw/0/XL/1dx2vs1dx_11-XL.jpg
IMAGE: https://photos.smugmug.com/Misc/1DX2-vs-1DX/i-t2g3SDB/0/XL/1dx2vs1dx_12-XL.jpg
IMAGE: https://photos.smugmug.com/Misc/1DX2-vs-1DX/i-v3mhxPq/0/XL/1dx2vs1dx_13-XL.jpg
IMAGE: https://photos.smugmug.com/Misc/1DX2-vs-1DX/i-8HtkCZF/0/XL/1dx2vs1dx_14-XL.jpg

Julian
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jwcdds
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May 06, 2016 01:03 |  #4

reserved


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sploo
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May 06, 2016 04:43 |  #5

jwcdds wrote in post #17997420 (external link)
reserved

outgoing

(sorry, I couldn't resist)

Being serious though: there's been a lot of hyperbole about significant high ISO quality gains vs the 1Dx, but DPReview's test charts didn't show much difference (in raw, which is kinda what matters more IMHO). Could you post some comparison shots at ISO 3200, 6400, 12800 and 25600?


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Bassat
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May 06, 2016 08:18 |  #6

sploo wrote in post #17997505 (external link)
outgoing

(sorry, I couldn't resist) ...

Now THAT is funny!

Full disclosure here, I will never be able to afford a 1DX, or 1DXII. That said, what is the point of such comparisons? Does anyone regularly shoot at -5 EC? I'm guessing that most folks who've been around digital photography for any length of time realize that proper exposure is key at any ISO, and more so at higher ISO.

Throughout POTN, there are shots from 6 year old crop cameras at 12,800 that show very little noise. I've made shots from a 6D at 102400 (controlled settings) that showed very little noise. I find my 6D files relatively easy to work with a 25,600. A 5-stop increase would be ISO 128,000. Is that ever necessary? A 5 stop underexposure would be at shot at ISO 800. Who would do that on a camera capable of decent ISO 12800 JPG files?

Is this a useful comparison, or is it just semantics?


Tom

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TeamSpeed
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May 06, 2016 08:37 |  #7

Landscapes, weddings, etc could very well have areas that are often 2-3 stops underexposed. 5 is a bit much, but you do these kinds of tests just to know what kind of headroom you have.


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Bassat
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May 06, 2016 08:53 |  #8

That makes sense. I know I don't push the limits of my equipment. It only makes sense that someone who pays for a Maserati would drive it harder than I drive my Rav4. I guess part of the reason I sold my 5Dc for a 6D was ISO performance. Duh!

(reminder to self - think BEFORE posting)


Tom

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jwcdds
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May 06, 2016 09:24 |  #9

sploo wrote in post #17997505 (external link)
outgoing

(sorry, I couldn't resist)

Being serious though: there's been a lot of hyperbole about significant high ISO quality gains vs the 1Dx, but DPReview's test charts didn't show much difference (in raw, which is kinda what matters more IMHO). Could you post some comparison shots at ISO 3200, 6400, 12800 and 25600?

Will do. My question to you, do you want "true low light" or just "crank up the iso"? By true low light, I mean situations where it's a dark corner of a poorly lit room where there's a scarcity of light to begin with. Whereas I've seen some people just reduce aperture and crank up iso, but it's still sunny-16 out and there's ample light for iso100 type. :lol:


Julian
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jwcdds
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May 06, 2016 09:34 |  #10

Bassat wrote in post #17997639 (external link)
That makes sense. I know I don't push the limits of my equipment. It only makes sense that someone who pays for a Maserati would drive it harder than I drive my Rav4. I guess part of the reason I sold my 5Dc for a 6D was ISO performance. Duh!

(reminder to self - think BEFORE posting)

Yeah, pushing shadows is not something you want/hope to do with every single image. But some situations do benefit greatly if you have a sensor that gives you the latitude to significantly bring up the shadows or bring back the highlights. Thus far, most digital sensors aren't great at retaining highlights. Once an area of the image is over-exposed, it's gone. So in high-contrast situation, where you don't have the luxury of bringing a flash or reflector or aux lighting to illuminate your foreground subject, but still want to capture some background, in order to do so, you expose more for the brighter background and hope that you can pull up the shadows later for the foreground.

An example is this image below from my recent vacation down in Mexico. The restaurant was literally on the beach/sand. It's lunch time, bright out, and we're under the covered patio area having a meal. My son to the right and his cousin to the left. This was taken as a 5-image HDR and merged in LR using my 1DX.

IMAGE: https://photos.smugmug.com/Family/Cruise-2016/i-Z2fKKTk/0/XL/20160413-Canon%20EOS-1D%20X-1DX_1070-HDR-XL.jpg

I tried desperately to pull up the shadows from the single image that exposed the background better but I was left with severe noise, banding crept up, and it was just unpleasant. It would have either been nice background with silhouettes, or photo of my son and his cousin but a bleached out white background with hints of some vertical poles, no sky/sand/wave behind them.

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Bassat
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May 06, 2016 09:50 |  #11

Impressive. I could take a lesson from you for my beach photos. I've always used film at the beach though. Sand and water in a $20 ebay film body is much less stressful than in my 6D!


Tom

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jwcdds
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May 06, 2016 09:58 |  #12

Bassat wrote in post #17997683 (external link)
Impressive. I could take a lesson from you for my beach photos. I've always used film at the beach though. Sand and water in a $20 ebay film body is much less stressful than in my 6D!

Well, I would hesitate to bring out any camera if it's gusty/windy, blowing sand and the salty air all over the gear. Things just get sticky and nasty. Weather resistant or not, I rather not subject electronics to that kind of salty assault. :lol:

But there was no wind, toasty hot out, with the sun beaming down on us at high noon having lunch.


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TeamSpeed
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May 06, 2016 10:26 |  #13

Great family shot! Definitely see the need for shadow noise control in those types of shots... :)


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Bassat
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May 06, 2016 10:29 |  #14

You guys know a lot more about shooting in extreme light than I do. Please discount my first post here as just uninformed.


Tom

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jwcdds
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May 06, 2016 10:41 |  #15

Bassat wrote in post #17997736 (external link)
You guys know a lot more about shooting in extreme light than I do. Please discount my first post here as just uninformed.

Not at all. That's why we're here on POTN as part of this amazing photography community. To share experiences and broaden our knowledge. :-)


Julian
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1DX2 vs 1DX comparison (exposure/shadow pushing)
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