Sometime a while ago I bought a camera on Ebay that came with a 210 mm lens. I eventually realized that what I have is a Calumet Caltar IIs front cell and a Fujinon (or possibly Nikon) rear cell. I realized this when I noticed that the front cell says made in Germany, while the rear cell says Made in Japan. I know the front cell is a 210, the rear cell isn't marked but looks like it should be from a 210. I can focus the lens normally and through a loupe it looks to be resolving fairly well.
Does the balanced nature of plasmat designs suggest that this lens should be usable, or are the design differences between makers large enough to make using this poor thing unwise?
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