TeT said:
brianftpc said:
...what a joke.
I shot this picture this morning with my 1dx and 1dx mk2. 6400 ISO 1/2500 f8 6500WB
if not for the extra 2MP I could just lie to you as to which is which...or just use the same camera and changed the image size on 1 of the pics!!!
http://www.deanjohnsonvideo.com/djp/64002500f8compared.jpg
You are mistaken..
If the picture taken with the 1DX is properly exposed then the 1DXII pic is overexposed in comparison. You should have dialed back your exposure or ISO or something to compensate for the
better performance of the
1DXII.
It is fairly obvious that one picture is brighter than the other....
Indeed, that's very apparent when you flip one image so the same region is mirrored. Since shot noise has a proportionately greater effect with less light, a small difference in exposure with low light input (either because of low illumination, or in this case, because of a short 1/2500 s exposure time) can make a big difference in shot noise, and that difference is amplified at high ISO.
The OP is basing conclusions about noise on exposures that differ (even with the same settings, a few minutes during sunrise can make a big difference in light levels which is why most of the comparison testing is done in a studio under controlled illumination), so the
joke is on him.