Hi,
Please tell me what is this: Wollensak APO-Raptar 21 1/4 in?:D Is it a process lens? 4 air spread elements? Will it cover 16x20?
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Hi,
Please tell me what is this: Wollensak APO-Raptar 21 1/4 in?:D Is it a process lens? 4 air spread elements? Will it cover 16x20?