diaphragm opening of 90mm f/8.0 Super Angulon at f/8greenspun.com : LUSENET : Large format photography : One Thread
I just picked up a used 90mm f/8.0 Super Angulon in Copal 0 (11,553,361, made in 1971, not multicoated, Copal S type shutter). It's in great shape overall, but the diaphragm impinges just slightly on the central opening of the lens at f/8. Opening up about a quarter stop past the f/8 mark removes the diaphragm from view. Is this normal, or have the markings on shutter somehow gotten rotated by a quarter of a stop?
-- Todd West (email@example.com), May 28, 2002
Mine is the same. At f/8 you see the diaphragm leaves. Mine is also of about the same vintage.
-- Tony Galt (firstname.lastname@example.org), May 28, 2002.
Mine is a '88 multicoated and is the same....
-- domenico (email@example.com), May 28, 2002.
My 90mm f/8 SA is the same. I bought it brand new one month ago.
-- neon (firstname.lastname@example.org), May 28, 2002.
Well, this seems conclusive. Thanks!
-- Todd West (email@example.com), May 28, 2002.
Just to hammer it home some more - same on my 18 month old 90mm f/8.0 Super Angulon in Copal 0....
-- Bob (firstname.lastname@example.org), May 28, 2002.