Originally posted by Moonkaye As I photograph wildlife and do lots of macro (bugs etc), the silent factor is pretty high.
If you're shooting macro, you probably shouldn't be using autofocus all that much anyways. I shoot bugs ( butterflies mostly ) all the time and the screw-drive autofocus is not an issue for me. It might be for other wildlife.
I use the K30 now, which is almost identical to the K50. The shutter is not the quietest there is, but I was using the K200D before, and it was even louder.
If you want a quiet shutter, try to locate a discounted K5ii or K5iis, or go for the K3. I don't know if anyone has heard the new K-S2 shutter yet.
K3's were heavily discounted not too long ago. When Pentax puts out a successor, they will be again.