M Vers wrote:
thedigitalbean wrote
5. How does it compare to a 5D2? Only compared the images briefly, but sadly the laws of physics still apply. The 5D2 has less noise at virtually all ISOs, however the difference isn't as huge as it was comparing the 5D2 to the 50D. Can you put a number on that? IOW the 5DII is cleaner by how many stops?
I have been scrutnizing the files to try to find an answer to this myself but its hard to say. Comparing the 5D2 @ ISO 6400 vs. the 7D @ ISO 3200, the 7D is definitely cleaner, so the advantage to the 5D2 is definitely < 1 stop.
The difference becomes minimal at lower ISOs however. My guess would be the 5D2 is cleaner by 1/3 to 2/3 stops (maximum) depending on ISO. Most of the difference I see is in the highlights (which I find very odd). What is making the comparisons difficult for me is that the difference in color and contrast (which is most likely because the 7D hasn't been fully calibrated yet in my ACR beta, and they probably used different lenses). Whats interesting is comparing both at ISO 12800, though the 7D has more noise in the highlights, it has virtually no pattern noise, where as the 5D2 has distinct pattern noise.