I had this Sigma with HSM in Nikon mount. It wasn't as fast as Dario's 70-200/2.8 in K mount screwdriven by *istD. If Dario reads it he may confirm this. AFAIR it was about as fast as DA* 50-135 despite ring USM motor, so nothing special. Contrary to this Canon L 70-200/2.8 IS was much faster when I tried it.
Cheers, Sylwek On 06.02.2008, at 00:58 , Adam Maas wrote: > I've heard $699 as the likely price. There's also a Sigma 70-200 f2.8 > HSM that's likely to be the fastest focusing lens available for Pentax > when it's released shortly (It gets a real ring-type USM motor, which > are typically much faster than the micro-motor USM setup Pentax is > using on the DA*'s to allow for dual-drive). The Sigma's going to be > more expensive though. -- 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.
