Originally Posted by
Bob Salomon - HP Marketing
Shutters for the past few decades have been made in 3 sizes; 0, 1 and 3. The size of the shutter required is dependent on the size of the mounting threads of the lens to be mounted.
Generally modern lenses from a focal length of 23mm to 150mm fit a 0 shutter. Lnese from 180 to 210mm are in a 1 size shutter and longer lenses fit a 3. There are exceptions to this. A 150 Apo Sironar and Apo Sironar W fit a 1. A 115 Grandagon was in a 1. A 240 Apo Ronar was in a 1.
So, what lens are you trying to mount in a shutter? If it is a modern Rodenstock we can get the proper scales. If it is a modern Schneider they can get you the proper scales.
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