Originally posted by switters The most interesting thing about those comparisons to me is what happens when you bring up the K-x. It looks very close to the K-5 at 12800. The D700 looks significantly better than both, to my eye at least.
I was unable to get the D700 in the comparison selections.
Is there a specific way to get that option?
Also, on the issue of the Kx vs K5, I think that they do quite close in JPG.
However RAW, shows a different story.
If you look closely at the grain and detail at 12.8k, you can may identify three attributes that influence IQ.
1. Noise grain(size and type).
2. Noise Artifact frequency(black dots).
3. Edge detail preservation or identification.
And given the sample sizes, it really isn't easy to assess(that's true). But with larger patches, the effects becomes much easier to discern and observe.