ltketch said:
I have a Minolta 7Sii and its seems very quiet to the point that when outside I have to tell myself "trust that it actually did work", but I can't compare it to the QL17 having never used one!
I'd second this nomination. All the leaf-shutter compact 35s are fairly unobtrusive compared to, say, a motorized SLR of the '80s. But of the ones I've used -- which include the QL17, Konica Auto S2 and S3, and Olympus 35 SP in addition to the Minolta Hi-Matic 7s2 -- I'd say the 7s2 was the most quiet of the group, and the Olympus was the least quiet.
I'd also say subjectively that the 7s2 is quieter than an M-series Leica, the Olympus is a bit noisier, and the others are roughly a tie.
Caveats:
Of course they all make slightly different
kinds of noise, and because of this one might be more or less obtrusive than another depending on the situation.
I wouldn't categorize any of them as "silent" -- if you're shooting in a quiet room, people nearby will be able to hear the click. I don't know if the Hexar AF's vaunted "silent" mode is really silent either, having never used one.
Also note that I'm talking about shooting at typical hand-held speeds. If you're making long exposures, an electronic-shutter camera such as one of the Yashicas might be quieter, because it lacks the buzzing gear train of a mechanical shutter.
All of which goes to show that when it comes to which camera is quietest, there's more to it than meets the ear...