Could somebody tell me the exact thread size for the Copal 3?
I need to place a filter in front to protect the blades since I only have a cell in the back for this lens I am using.
Thank you very much
Luis
Could somebody tell me the exact thread size for the Copal 3?
I need to place a filter in front to protect the blades since I only have a cell in the back for this lens I am using.
Thank you very much
Luis
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