ERR 01 - Canon EF 24-70mm f2.8 II Aperture Module replacement repair (full step by step) - YouTube
Pin on fix Canon Error 01
Common Canon Error Codes and Solutions
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
Old Sigma 18mm lens causes Err 01 on Canon DSLR - Photography Stack Exchange
19 Canon Camera Error Codes & Their Solutions [Detailed Guide]