John Francis wrote:
It keeps dust off the sensor during lens changes. I expect point and shoots use non shutters, but their response times are pretty abysmal, partially, I expect, due to how they have to desensitize then resensitize the sensor.
Will this never die? We've hashed this out here at great length before, wth references taken from Phil Askey's camera tests on dpreview.com
The main reason for shutter lag in point-and-shoots is the time it takes for the auto-focus and metering circuitry to come up with an answer. The additional sensor-clear lag is usually well under 1/10 of a second; practically un-noticeable when bundled in with the half a second or more that's typical of even the more expensive point-and-shoots.

