There seem to be alot of East German CZJ tessars on the market lately. These are barrel lenses and many will fit into a Copal 3 shutter. The lenses are very inexpensive and seem to be in excellent condition, but even a use Copel 3 shutter is pricey. How sharp are these lenses and would it be worth picking one up for $50-100 and then trying to find a cheap Copal 3? The one I have my eye on is a 180mm f/4.5
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