mine was somewhat fiddly on my k10d, focusing lousily when at 16mm position, but since i've done adjustment via the firmware crack of heavy backfocus for my fa 50 1.4, it seems to act better. what i did find out is that 50mm of 16-50 is something like 40mm in 50 1.4 terms as far as fov is concerned.
-- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.