Nicholas F. Jones
29-Dec-2007, 02:38
According to the B&H website, the Copal #3 shutter comes in two sizes, the 3-585 (M62-0.75 mount thread; fits 65mm lensboard hole) and the slightly smaller 3-567 (M61-0.75 mount thread; fits 64.1mm lensboard hole).
My question is, how do you tell them apart? I do not have examples of both (SFAIK) in my physical possession to compare. I'm not even sure which of the two types are on the Copal #3 lenses that I own.
Is there a marking on the shutter? From the B&H specs it's obvious that careful measurements would distinguish the two. But I'm trying to determine the size of a shutter that I can only see in a picture.
Any help will be much appreciated.
My question is, how do you tell them apart? I do not have examples of both (SFAIK) in my physical possession to compare. I'm not even sure which of the two types are on the Copal #3 lenses that I own.
Is there a marking on the shutter? From the B&H specs it's obvious that careful measurements would distinguish the two. But I'm trying to determine the size of a shutter that I can only see in a picture.
Any help will be much appreciated.