Originally posted by Darren M My K10D was really no better, though with the chunkier body it does absorb the knock better, and of course it added SR. The K20D was better, but still not as good at the *istD. The end result is that I know I am losing sharpness in dim light because of the poor shutter/mirror assembly.
I think you're spoiled or had a different sort of example of a K20d: this is about the softest release I've ever had: then again I like shooting in urban night with a fast short tele, and I'm used to big old Canon FD's.
Still, (far less often since the very nice SR firmware upgrade) I'd often turn the SR *off* and be getting far better percentages than I did on film, and I'm really good when my hands are good. I'd hardly call it a 'poor assembly.'
The K20d's shutter itself isn't particularly *quiet,* by digital standards, no, but that actually doesn't bother me, and I certainly don't think it's introducing undue shake. (I actually kind of like the sound, has kind of an interesting scissor-snick sound that I find interesting, sounds plenty authoritative and the sound doesn't actually seem to carry any too much. Though again, I'm not a big shutter-quietness person: my usual habits with people don't really involve stealth: I'm kind of interactive that way: actually working with the winder sounds far more often than trying to hide them. Anyway, I'm sure you'll like the 'quieter' aspect, anyway. )
As mirror slap goes, I was pretty convinced I was looking at the mirror+condenser+prism thing we saw in the patents, though Pentax's own site doesn't seem to show it being there: that kind of looked like it had a squarish mirror that wouldn't have to travel as far, (don't know how they'd manage the optics there,) but if they worked some of that tech in, it'd probably make for both a quieter and potentially-faster release. Kind of curious, there.