Bill Robb wrote something that I snipped until this was left: > The Canon rep told me (sorry, not compelling evidence, just anecdotal) that > they felt accuracy and reliability would be improved by eliminating moving > parts, as much as possible, and that in the long run, it would be cheaper > for manufacture and, consequently, for the consumer to purchase.
The accuracy comment makes sense. With an aperture ring you have detents for stops and half stops. Anything in between is a guess. Electronic aperture operation gives the photographer more precise control. Tom Reese
