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[quote name='thw' timestamp='1290598773' post='4383']

Klauss, I don't think you need bother getting the camera serviced or replaced. The K5 has very strong built-in RAW NR. Pentax used to implement mandatory NR for RAW only at ISO 3200 and above. Now, they've really gone overboard... in their quest for 'seemingly higher DR' at low ISO. Sigh..



But it should not stop you from reviewing Pentax lenses, should it?

[/quote]



This is not true.

Pentax applies NR on RAW data in their Prime engine from ISO 3200 and above only.

Below 3200, there is no NR applied as measured by GordonBGood and stated here:



http://forums.dpreview.com/forums/read.asp?forum=1036&message=36985545



The lack of pixel sharpness is very likely stemming from a strong AA filter only.