Originally posted by benjikan
Don't want to be vague, but this is the best I can do for now.
Ben
Originally posted by codiac2600
It's blows my socks off and I shoot more than just models in the studio if that means anything...
Well, obviously more can be said, so the degree of vagueness is more than necessary - for whatever reason.
One of the actually helpful beta-testers already let us know that the jpg files are less compressed than the K10D at 7-9mb which is great
With the early firmware the high ISO files appear to be less noisy (I guess not as gobsmackingly amazing as people seem to think the D300 is - but its way to early to know the final firmware)
We can't know all the beta testers, but the few we already know of are substantially in the camp of "I only shoot RAW", so really aren't as good judges of jpg quality. There's hopefully a few beta testers that have gone beyond that snottiness, and need very high quality jpg's out of the camera, so they can tell Pentax solid suggestions on what can make the K20D jpg's even better (if necessary).
We also already know that there will be more jpg adjustments in the K20D. According to the googly-eyed Ken Rockwell, the D300 jpg saturation is able to be adjusted to far more "intense" levels than the D200 without blowing out channels. Hopefully K20D jpg technology is advancing as well. Pentax absolutely needs jpg-partial beta testers.
It also seems that the dynamic curves adjustment they employ in that camera that detects when highlights will blow out, and tames them along with bringing up the shadows - is, in practice, a really usable feature as opposed to yet another marketing gimmick DSLR's are prone to. It was a bad gimmick in the D80, but actually works in the D300.
I'm sure Pentax is keeping an eye on their competition, and carefully seeing what stands out as really useful, while hopefully ignoring the competitions dumber ideas.