Nikon CP-4 polarizing filter

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colohank
Posts: 113
Joined: Sat Jul 24, 2021 6:07 pm
Location: Fruita, Colorado, USA

Nikon CP-4 polarizing filter

Post by colohank »

Does anyone know the front-thread specifications for an older Nikon CP-4 polarizing filter? It has 52mm rear threads, but the front diameter is larger -- maybe 59mm or 60mm?. If possible, I'd like to mount it in the infinity space between a Raynox DCR 150 and a Nikon Plan 10X infinity microscope objective.

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