In a box of junk I recently picked up I found a Spectra CT #3S (1/2) filter in series VI size. It appears to have a brownish cast or maybe yellow/brown...anybody know what this is?
In a box of junk I recently picked up I found a Spectra CT #3S (1/2) filter in series VI size. It appears to have a brownish cast or maybe yellow/brown...anybody know what this is?
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