Pentax K-7 Review: Image Quality – Duplo:
I am through the editing of the acceptable part of 1000 frames, I will need to see the prints before being making my final judgment, but based on what have gone through editing, IQ is excellent for what I need it to do, save for a few things that I will get to.
Base ISO is generally excellent, ISO 200-400 decent and ISO 800 is there if I absolutely need it as a last resort, but definitely not good. Anything above is a no go for the work I do, luckily it bought it for use at low ISO and as a travel camera and thus I can live with the limitations.
DR (Dynamic Range) is lacking in general, not overly so, but high contrast is unfortunately not something I can avoid shooting, which is why I see the limitation, a little noisy at base ISO too in certain situations, but overall the lack of DR is the one issue I can find across the board and it gets worse fast as you raise the ISO.
Colour accuracy and tonality is generally in the good to acceptable range at low ISO, at higher ISO or in shadow areas it is a little lacking, but for its class it is very good.
I still think that it will deliver excellent prints at base ISO and all the way up to ISO 200-400, but as we leave base ISO I will need to work a little more to get what I want from it.