on 07.07.03 17:14, P�l Jensen at [EMAIL PROTECTED] wrote: > Well, they have patented this too :o) > The KAF3 mount will cater for both IS and USM. It is probably not a technical > decision, more a marketing one. I think Pentax must releases USM lenses > because all the competition does soon. Minolta will release their USM lens > series this fall. Canon, Nikon and even Sigma already got theirs. Firstly, > though. Pentax needs bodies that can take USM lenses and that appeal to likely > buyers of such lenses. Actually I have read this patent :-) But it seems strange that they haven't implemented USM in their lenses/bodies yet. I wonder if *ist D would be able to use such a lenses in the future? According to this patent no, because it doesn't have powerzoom contact neccessary to drive in-lens motor. but maybe they have found another way to transmit power to the lens. Time will tell... AF is no faster with USM than with coreless DC motor, but sometimes possibility to have FTM (full time manual) would be useful and quietness is important factor for many people.
-- Best Regards Sylwek
