mountainhill, you mentioned that at JPEG level, Pentax has a different approach from its competition - how? And more info about the noise levels, please! Cheers! =)
Well, I'm just a beginner in DSLR, but I read a lot of reviews, forums, etc. to learn more.
From there, I understand that Pentax applies only small amount of noise reduction in its JPEG, even at its highest NR setting (strong NR). This results in more detail preservation, however more noise. The competitions thus far take different approach, more NR, resulting in cleaner image, but smeared details.
IMO, we can try to reduce the noise by software, however the lost details are lost.
I assume you understand that digital sensor will actually produce RAW data, which will then be converted by the camera into image format (JPEG, sometimes TIFF, etc.).
regards,
Shan