bdunbar79 said:
I own both, 1DX and 5D3. Let me say this. At high ISO, say 12,800, I can still print 8 x 10's or better with very fine detail and no noise with the 1DX with minimal processing, whereras the 5D3 requires a lot more post processing. Also, the 1DX files can pull more shadow detail and highlight recovery. Despite having 3 less MP's, the prints are substantially better. My Nikon buddies who shoot sports, ie D4, say they wish they had a 1DX instead when they look at my RAW files and prints.
I have no experience with the D800/E.
The 1dx makes the D4 look like a toy. Sharper, better focus, better resolution, better lens mount, faster frame rate...
But one thing that the 1dx seems to do that makes me scratch my head is that it exposes differently. I've seen photos that were taken at the same time, same settings, same lens, but the 1dx is about a third stop darker. If I need to expose longer on the 1dx vs the 5d3, to me that defeats the point of the 1dx's cleaner ISO performance. You have any experience with this? Same thing with Nikon cameras, they seem to expose 1/3 to 1/2 stop brighter than canon at identical settings. That would be a pretty nice advantage it seems.