very interesting indeed, it seems their goal with the K-70 was to reduce false color noise and they surely achieved that!
at ISO 6400 and 12800 raw color noise in the K-70 is much better handled than with the K-3II and even the K-50 which shares the same sensor with the K-5. Below ISO 3200 the difference is still there but becomes less of an issue.
Still shooting a K-5, i cant help but wonder if there happened something in the algorithm, im never feeling comfortable to go above ISO 1600, as my pictures turn out very blotchy, with lots of wrong color noise, etc.. but here it even seems viable to go as high as ISO 6400 without any major issues...
from what i gathered here on the forums the K-5 is supposed to better the K3 series in low light, but to me it seems the 24mp sensor just gives and edge in detail retention, albeit with slight higher luminance noise per pixel (color noise seems to be becoming a nonissue with the k70 now
), but since pixels are smaller anyways it doesnt seem to matter so much. Is this correct?