Originally posted by thehiko Well for my scenario, I want to be able to specify shutter speeds for the given conditions and have aperture locked. Also, no limits on auto ISO would degrade image quality. I'd say it's a compromise, not necessarily a workaround.
Regarding the green button and program line, what I've noticed is that even when I've set it to the high speed program, it does not always give me what I want. In other words, it can be unpredictable. And I'm looking for predictability. Is it just me? Maybe I'm doing it wrong? But I've seen it set on high speed program line, and it has still dropped the ISO down to 200, shutter speed 1/8, for instance. If I'm doing it wrong, please do advise.
My experience with the way pentax has programmed things, is that it attempts to make exposure with ISO first, , then with the program line.
i believe you may be expecting more than the camera can do, gven the lenses you have and the ISO limits you are forcing.
people often complain about high iso degrading images, but I'll put some food for thought here.
the first shot is to a 100% crop of a shot from a K7 at 1600 iso, the second is a K5 at 6400 iso
for me, i would rather have these shots than a blurred image, but fine grain,. i do not see the degradation from high iso as a compromise over blurred due to motion or other limits.