I said "Remove one of the groups (the rear I suppose) and what remains is a 370mm f12 lens." Glad I wrote "I suppose", it was a 50/50 proposition because I'd never used one in converted mode.
regards, Anthony Farr ----- Original Message ----- From: "Mat Maessen" <[EMAIL PROTECTED]> (snip) > If you unscrew the front lens element, leaving the front of the shutter > bare, it becomes a 370mm f12 lens, though quite a bit less sharp than at > 210mm. > (snip)
