Inner Focus wrote: > Yes, interesting posts by the engineer who started that thread. The > conclusion is that ultrasonic motors CAN be faster, it's just that Pentax > have chosen a poor implementation (SDM) which doesn't make full use of the > technology, and thus it's results are far from optimal (they should have > chosen a ring-type motor instead of a micromotor). > I've always suspected, and still suspect, that the focus motor speed is not really the limiting factor on the Pentax AF system. Or to be more blunt, It's always seemed to me that the logic that goes "my AF is slow, so the motor must be made faster" is an example of narrow-minded thinking. Remember that there's a lot more involved in an AF system than just a motor.
I've also suspected (or experienced) that the Pentax AF isn't really as slow as some would have it, or not slow at all in relative terms if you compare fairly (as Mr Robb points out), but that's a different issue. - 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.
