Here's a K7 ISO2500 image I worked on for a fellow Pentaxian(Adam A) from dpreview. He agreed to let me use this image in part for an advanced noise management tutorial I've been working on(very kindly). And so I thought I would share the preliminaries here as well.
META: Pentax K7, ISO2500, 35mm, 1/60, f/5
The initial image suffered from 1 stop of under exposure, artifacts and banding(horizontal). It was processed in ACR6 and TopazDenoise v4 with intent to print full size(resolution). All in all, I'd say the final composite turned out very good. The total PP time for this image was approximately 15 mins. However, final IQ and PP times would have improved with better exposure(so next time perhaps).
Having achieved favorable results with the K20D, I'm now looking for K7 candidates(RAW files) that I could use to develop and refine a max ISO workflow also. So if you are interested in helping out, please PM me so we can make the necessary arrangements for the files.
The objective is to design a tutorial for K7 owners that would allow them to shoot at ISO3200(or higher) without compromise(reduced file size, b&w etc etc). And based on the results above, we have good reason to conclude such a goal possible.
JB
Last edited by JohnBee; 05-01-2011 at 11:06 AM.