on 07.06.04 16:11, William Robb at [EMAIL PROTECTED] wrote: > I tried an FA 80-300 (?) on my istD one day. It seemed decent enough. I tried it too yesterday and compared to F 100-300/4.5-5.6 and Sigma APO Macro 70-300/4-5.6. Pentax glass has better contrast and sharpness than Sigma. But they have still to be stopped down to at least F8 to tell that both contrast and sharpness are good. Unfortunately both lenses suffer from quite significant chromatic abberations (Sigma was slightly better in this regard), which can be visible on prints bigger than 15x21 cm.
-- Best Regards Sylwek
