Keith_Reeder said:
Pretty much comports with what I've been saying for a while about the 7D Mk II based on my own Raw conversion tests. That the 7D Mk II gets within a stop of the FF cameras is damn' impressive.
And - again - the 70D, and the 7D Mk II, show no appreciable pattern noise in pushed shadows.
I wouldn't say that at all. At "Full Size", that may be true, however once you switch to "Print", FF pulls ahead again, with considerably lower noise in all cases.
I would also strongly dispute the notion that the 7D II does better than the D7100. Again, at "Full Size", the gap is small, however at "Print" size, the D7100 exhibits far less color noise. The 7D II still suffers from color noise problems. This is most obvious in the monochrome color swatches of the test image, but yellow, orange, green, and blue swatches also suffer from blotchiness due to color noise. Yellow and blue and maybe purple seem to be the most hard hit of the color swatches.
The third gray swatch from the right edge of the color checker demonstrates the differences in color noise best. I am actually rather impressed with the 6D noise...very clean.
The grain pattern at ISO 3200, 6400, and on most color swatches 12800 is a far more pleasing random mostly mono grain with the D5300, D7100, D810, 6D, 5D III, A7r, A7s, etc. than it is with either the 7D II or the 70D (or any other Canon crop). Color noise is still a key problem for Canon crop sensors at high ISO (and I suspect with shadow lifting.)
The D5300 seems to perform a bit more poorly on the brown and tan swatches...color noise is worse in those, for some reason, however its quite excellent in all the rest. The D7100 does not seem to have that problem...all of the swatches look excellent on the D7100 at Print size.
Overall, I don't see a whole lot of difference in luminance noise levels overall between any of the crop cameras. Luminance noise seems to be about the same on a normalized basis. The key difference is color noise and how it presents. Canon's characteristic blotchiness is still in play. I am not sure how it compares to older cameras...it's not possible to select the 7D in their new comparison tool on DPR. I suspect the 7D and 5D II are worse, but Canon crop is still worse than everyone else when it comes to color noise (and the 5D III and 1D X are still worse than the D810).