Yeah even KM was going the USM way IIRC On 4/16/06, Boris Liberman <[EMAIL PROTECTED]> wrote: > Cotty, > > > Boris, Sigma has what it calls HSM (Hypersonic motor) which is Sigma's > > version of USM. just FYI, it's not as fast and as quiet as Canon's USM. > > If the Pentax USM (if indeed it is a USM type system) is anywhere near > > Canon's, you will have a smile as wide as the wailing wall ;-) > > You're probably right... However, I'm done with enablement of > magnitude of Sigma 70-200/2.8 for this year (About this later in a > separate post). So my smile will be, well, teethless then... > > Yet, any USM implementation, be it Canon, Nikon original, or even > Sigma seems to be way advanced compare to Pentax screw driver. > > -- > Boris > >
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