The F 1.4/50mm was in production 1989-1991 The FA 1.50/mm was in production 1991-2004
So, there's up to 15 years between the first F 1.4/50mm and the last FA 1.4/50mm. ----- From Boz's site, it looks like the optical formula actually dates back to 1975. Same for the 50 F1.7. Joe -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net

