I just came to the realization that a given shutter, say a Copal 0, comes with a variety of aperture ranges. For example, one might have f6.8-f45, whereas another might have f9-f90. My questions are
a) can these be used interchangeably - in other words, can a f6.8-f45 shutter be used with lens cells that normally take an f9-f90 shutter
b) if the anser to (a) is yes, does, for example f16 with one shutter correspond to f16 with another on the same lens, or will the scale be off due to one f-stop on a particular lens having a particular physical aperture size from the same f-stop on a different lens.
I'm asking these questions because I want to replace a non-working shutter from one lens with a different (in the sense described above, but both Copal 1) shutter "robbed" from another lens. I'm also looking at possibly replacing a Copal 0 that is f9-f90 with another that is f9-f64.
Thanks for any help you can give me in this regard.
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