On Tuesday, March 18, 2003, at 09:45 AM, T Rittenhouse wrote:
USM = Ultra-Sonic Motor...the overall improvement is only
incremental in the real world. HSM (Hyper-Sonic Motor) means the same thing.
10% real improvement, 90% hype <g>
The question is: how much quieter is it? I find that I can't use AF on my PZ1p in a concert hall because it's too noisy. Well, so's the shutter mechanism but if I could get a quiet shutter mechanism and quiet AF on a *ist-D, that would make it very attractive for me. It could even be a quiet motor in the camera body.
--jc
