Canon EOS 1D X - ISO test + RAW files

[heptagon]

At high iso-values the cameras are pretty much physically limited with a noise value identical for downscaled images. So there are no wonders to be expected. The 1Dx will be marginally better than the 5D3 compared at pixel level but not when downscaled.

 

[marekjoz]

Do you have any direct comparison of ISO with 7d?

Why would you be comparing ISO with one of the lamest pro body cameras in terms of ISO and IQ. If its one thing the 7D was NOT is a good noise performer.

It was so much written here about it that I'm not going to argue
7d is still recommended by Canon for sports photography. When you crop FF to APS-C size, the noise of 7d is not so awful anymore. The more interesting here for me is comparison of the 18MP flagship FF for sports to the dated 18MP flagship APS-C for sports.

 

[Canon5Dtips]

I would like to see an ISO 51200 real world comparison to the 5D3: same location, same lens, same exposure value...

I would like to see it as well Maybe in near future I can agree some cooperation with Canon, who knows, ..
Only people can help me get there

 

[V8Beast]

ISO 12,800 on the 1Dx looks similar to ISO 6,400 on my 5D3. I very rarely push the ISO past 1,600, so I'm hardly the best judge on the matter. The noise grain definitely looks different on the 1Dx, though.

 

[pedro]

I would like to see an ISO 51200 real world comparison to the 5D3: same location, same lens, same exposure value...

I would like to see it as well Maybe in near future I can agree some cooperation with Canon, who knows, ..
Only people can help me get there

Go for it, Canon5Dtips. You're the person to do so. Get it rented for a weekend and stroll down Broadway, Beale Street or whatever. I'll stay tuned! Well, if ISO 12800 on the 1Dx according to V8Beast is like ISO 6400 on the 5D3 that makes one stop which is needed for a PJ workhorse. So my decision to go for the 5D3 within one year or so (saving up for a nice WA and expecting a slight price drop) seems to be quite a good thing. I couldn't afford a 1Dx anyway. But as an enthusiast photo amateur the 5D3 at almost half of the price will help me to do anything I am into photographywise: avialable light and low light high iso photography-"robert frank style" (people, street, inhouse scenes), nightphotography, some landscape. Cheers and thanks, Pedro.

 

[chrysek]

ISO 12,800 on the 1Dx looks similar to ISO 6,400 on my 5D3. I very rarely push the ISO past 1,600, so I'm hardly the best judge on the matter. The noise grain definitely looks different on the 1Dx, though.

How different?

 

[V8Beast]

How different?

The 5D3's noise looks more grainy, while the 1Dx's noise, at least in the sample set posted in this thread, looks blotchier, for lack of a better term. I don't know that one type of noise is preferable to the other, just different.

It's hardly a conclusive observation, so I wouldn't put much weight into it. It's merely the opinion of one 5D3 owner who rarely shoots past ISO 1,600 comparing it to a camera (1Dx) he doesn't even own

 

[JaxPhotoBuff]

In this case, if 1DX@51200 = 7D@3200 then DxO tells me the 1DX should be 1 to 2 stops better at high ISO (using the SNR graphs) than the D4/D800E. Now if that holds true and is present right up/down the curve, then the 1DX represents not only a new sensor but newer sensor technology than is in the 5D3.

I would like to see an ISO 51200 real world comparison to the 5D3: same location, same lens, same exposure value...

Just take a look at the side by side comparison in the 1DX review posted on the CanonRumors home page today. It provides exactly what you are asking for. The author provides high ISO sample photos of the same subject shot with both the 5D Mark III and the 1DX, and then puts 100% crops right next to each other so you can compare them side by side.

Wish granted!

 

[RLPhoto]

Yep, The 1Dx is 4 stops better ISO performance that my 7D. I looked at the review on CR and this camera is amazing piece of kit.

 

[marekjoz]

Yep, The 1Dx is 4 stops better ISO performance that my 7D. I looked at the review on CR and this camera is amazing piece of kit.

... an costs 4x more. 1dx performs twice ISO better than 5d3 and costs 2x more. Interesting correlation.