This term is quite prevalent on the forum but I have found nothing to identify what a plasmat is. It sounds generic, like "coats". I even checked my copy of View Camera Techniques, 7th; College dictionary, and, Google. I think I ran across filters with same identity.
Since I'm sure the answer for the above term is something simple, do I need to open a new subject for "convertible" lenses?
My understanding is these are switchable elements of a lens group. Is there a way to recognize one besides being told? Again, Stroebel has nothing much on them. They sound like a good option for a beginner. "Two-fer-one" mentality.
Thanks, Bruce
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