Sylwek wrote: 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.
REPLY: The *ist's can almost certainly not take IS or USM lenses. An explanation thats likely is that Pentax have no immediate plans to implement these features. Another possibility is that such features will be introduced at the higher end only. Such an approach is not unlikely in an era where electronic features are dirt cheap; there must be some features reserved for more expensive cameras only. Pål
