Originally posted by robgo2 I seem to recall a post from GordonBGood on dpr stating that the K20D applies NR to RAW files beginning at ISO 1600, whereas the K-7 does not do so until ISO 3200. Can someone confirm this?
Rob
I have tried to tackle this myself a few months back and was never able to substantiate the claim technically. Though what I did find was that at ISO2200 and above, the K20D would retain more detail than the K7 in RAW.
Which wasn't actually so much as "more detail in IQ" as it was less detail loss due to noise degradation. So it's its a bit of a play with words really.
Having said that, due to the nature of the noise patters generated by the K7 at higher ISO's. I was never able to retain as much detail with the K7 as I did the K20D at higher ISO's(using my own NR methods). Therefore... my conclusion was that the K7 did not match the K20D at higher ISO's(2200 - 3200). Though at lower ISO's, it did seemed to produce more detail. However... I often got the impression that the K7 employed a more aggressive curve than the K20D and that the K20D could aways be adjusted accordingly(see grain).
So... for me, it was really hard to reach a solid conclusion.
Though the high ISO noise/detail seemed like an open and shut case.
PS. the main issue with the K7 was in the nature of the noise patters at higher ISO(blotching and banding). Though banding could be worked around, the blotching turned out to be a real show stopper. .