John Whittingham wrote: > > Thanks for that information, it's reassuring to know. I'm sure I read > somewhere that the Sigma 300/4 APO is recognised as FA 300/4.5
It certainly is. However, with the matching 1.4x and 2x EX converters it still shows up as 300mm. I'm not sure if that would adversely effect SR (600mm vs 420mm vs 300mm). As a point of example, the Canon 300/4 and 1.4x converter show as 420mm in the EXIF data and the 600/4 + 1.4x show up as 840mm. Christian -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
