Upload & Sell: Off
I received a Canon FT QL from my uncle as an unexpected Christmas present after he noticed I have taken up photography as a hobby. Within the camera bag, he had 5 filters that I know nothing about. Was hoping someone could guide me through what the letters/numbers mean. The only info I could find were similar filters for sale on e-bay, but no info was given. Much thanks in advance!
PRO 48 (Greek symbol that looks like a 0/zero) No. 3 JAPAN
Toshiba 49mm SL-1A
Toshiba 49mm CU No.4 JAPAN
PRO 48 (Greek symbol again) 1A JAPAN
Toshiba 49mm P.L JAPAN, with a triangle on the opposite side of the filter case as the name