Originally posted by Lampo Wow, those are amazing shots, the K-5 seems to perform very well, even at 12.800...
Yes, that's really amazing. I noticed (from Google translate of the page) that the K-7 shot was in bright mode, but couldn't find anything about this from the K-5 shot, maybe that explains some of the lack of color nuances in the K-7 shot.
But look at the detail in that crop! Really amazing. Looking at this, I would expect ISO 25600 to be at least as good as 6400 on the K-7. 12800 certainly is better than 1600 on my K10D.