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A photographic lens is used to focus the light onto film or a digital sensor. Many cameras have interchangeable lens systems, allowing the photographer to choose the type of lens to use.
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How can I fix Err 01 with a film-era Sigma lens on a Canon DSLR?
I tried using the lens on my camera. … Clean the lens contacts.
I don't think my contacts need cleaning because the camera works fine with a 18-55mm lens.
How can I solve this issue? …