Adam Maas wrote: > On 1/28/08, Brendan MacRae <[EMAIL PROTECTED]> wrote: > >> --- Toralf Lund <[EMAIL PROTECTED]> wrote: >> [ ... ] >>> He was talking about hunting. Surely the motor does >>> not affect that? >>> >> Ah, you're right, he was. My bad! Yeah, that's a >> function of the AF sensors themselves. >> >> -Brendan >> >> > > Not always. SDM lenses hunt a lot less because they won't overshoot > the mark, they are in effect stepper motors, and are told how far to > turn the lens, screwdriver AF tends to overshoot more. > It should also be possible to hit dead-on every time with an encoder-based setup like the one of the screwdriver, but I suppose that may be the case. I'm not sure this overshot may be described as "hunting", though. It should at least be possible to correct with just one extra movement in all cases.
Incidentally, I've been thinking it might have been interesting to see an in-body-motor setup based on steppers, too (which shouldn't be too hard to implement). But I suppose it isn't very likely that we'll get anything like that... - T -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
