Can you tell which roll of film has been used? I can't remember if

How to tell if a roll of 35 mm film is used or unused - Quora

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Can I still use the rest of my 24 exp film roll if I have only used 10 and rolled it back in the canister? - Quora

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Silly question: how do I know if a film has been used? : r/AnalogCommunity

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How to tell if a film is used - Quora

Can you tell which roll of film has been used? I can't remember if I used one or both! Thanks :) : r/AskPhotography

Is there any way to tell if film has been used?, I Shoot Film

Disposable Film - Everything You Need To Know - NFI

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How to know if I have finished a roll of film - Quora

Chantel Renae Photography