It seems to me that sharpness of K-5 at ISO80 is less than at all other ISO (I've checked 100-800).
I've tried to shoot at ISO80 with K-5 - it seems to me - VERY good film like photos, not soft, but even ISO800 is sharper than ISO80 with the same settings in C1Pro.
ISO80 is very good for portrait IMO. No problem.
If you shoot at ISO80 - you could think that K-5 has stronger AA filter than K200D or K10D....
But...I've compared picture at ISO100-800 and I can see that K-5 can offer rather sharp picture, just a bit worse than K10D with weak AA filter.
maybe, it's illusion...I will try to check my conclusion about ISO80...Of course...
Can the user of K-5 confirm it or deny?
Last edited by ogl; 01-04-2012 at 12:16 PM.