Canon Err 01 - How to fix faulty lens communication 📷 - YouTube
Thomas Camera Services Ltd - #Error01 on a Canon EOS 650D. This fault can be caused by either the body or the lens. For example: lens contact issues on the body or
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Canon Error 1 Problem - How to fix faulty lens communication Canon camera & lens. - YouTube
Canon Knowledge Base - Solutions for "Err 01" error message on the EOS 5D Mark II.
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