>Some manual focus macro lenses trade off precision in focusing for >focusing speed. I have a older Kiron 105mm f 2.8 (I believe the same >lens as the Vivitar Series 1 f 2.5 (Kiron was the OEM for Vivitar)). I >just checked it - the lens barrel rotates just under 2 complete >rotations to go from infinity to 1:1. By contrast the D-FA requires just >under one full rotation of the focusing collar to cover the same >focusing range. One facilitates precision, the other speed.
The local Cord Camera as a Kiron for $300. Pricey, but apparently highly regarded. -- 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.
