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
