Not sure Sean's reply is going to ease your fears, so I'll try to add a bit to it...
The blue blotch is supposed to be there, ala the final link of the 3. But it's not suppose to have the strong magenta cast / noise in it. If you look closely at the cat pre & post, you'll see similar blue-greenish & magenta noise that got cleaned up as well. None of this has anything to do with the K10D itself. (Well... there could be a bit of IR leaking in as Sean speculates - he had the camera pointing right at a heater after all).
The real problem here is that ACR doesn't know the response curves (I guess) for the K10D. So using the DS(?) or other profile can result in strong artifacts. One can overcome this by doing a manual calibration of ACR. mskad figured out a decent set for his K100D and apparently these settings worked pretty well for Sean (K10D). Please see the embedded link to mskad's [other forum] post in the 'Totally helps' post I linked to (or scan the thread for my 1st post in it which also has this link.)
I can tell you that I would have no qualms purchasing the K10D. It appears to be an excellent camera, particularlly in terms of value for the $$$. However, my DS is still going strong & it's hard for me to justify the cost at this time.
Bottom line: If you use RAW (PEF or DNG) from the K10D, you need to
A) process with a converter that 'knows' the K10D - right now that's only Pentax photolab I'd guess.
B) calibrate your favorite raw converter yourself. (I'm not sure which programs besides ACR support this.)
I think the latest ACR has an embedded profile for the K100, so maybe that will suffice until a new version comes out that "supports" the K10D.
C) live with the occasional artifacts or "repair" in PS et. al.
D) wait for the necessary update of your fav. raw converter. (Shoot JPGs or better yet, RAW + JPG while waiting.)
Originally posted by slipchuck thanks for the links
unfortunately that thread is much to advanced for me, technically speaking.
That blue "blotch" above the cats head sure is weird...... definitely not supposed to be there, that is for sure.
kind of gives me a bit of cold feet about the k10 purchase. hopefully someone could elaborate further to ease my simple mind
thanks again
randy