Originally Posted by Arpe
What do the colour profiles do please?
They are supposed to get you more accurate colors. In lightroom or Camera Raw you can now select 2 new profiles, one is the Adobe standard which is supposed to be color accurate and another one called Camera Standard which mimicks the color rendering of the JPEG in-camera.
For some cameras, Nikon and Canon in particular, Adobe also provides different color profiles matching the color styles of in-camera JPEGs. Unfortunately it's not available for Pentax.