![How to fix Err 01 communications between the camera and lens is faulty | Emergency solution | - YouTube How to fix Err 01 communications between the camera and lens is faulty | Emergency solution | - YouTube](https://i.ytimg.com/vi/X2R3XH2GB38/maxresdefault.jpg)
How to fix Err 01 communications between the camera and lens is faulty | Emergency solution | - YouTube
![Canon Err 01 - How to fix faulty lens communication|CANON ERROR 01 Killer problem-Emergency solution - YouTube Canon Err 01 - How to fix faulty lens communication|CANON ERROR 01 Killer problem-Emergency solution - YouTube](https://i.ytimg.com/vi/e6B6upH4Ksg/mqdefault.jpg)
Canon Err 01 - How to fix faulty lens communication|CANON ERROR 01 Killer problem-Emergency solution - YouTube
![Err 01 Communications between the camera and lens is faulty. Clean the lens contacts Quick Fix - YouTube Err 01 Communications between the camera and lens is faulty. Clean the lens contacts Quick Fix - YouTube](https://i.ytimg.com/vi/hscED9ZYQK4/maxresdefault.jpg)
Err 01 Communications between the camera and lens is faulty. Clean the lens contacts Quick Fix - YouTube
![Any idea how to fix this? It's happening with my sigma 75-300mm lenses I haven't used it in over a year. I've cleaned it with a normal cloth by nothing is helping? : Any idea how to fix this? It's happening with my sigma 75-300mm lenses I haven't used it in over a year. I've cleaned it with a normal cloth by nothing is helping? :](https://preview.redd.it/48i1il42g2551.jpg?auto=webp&s=2905285506e2389b6cc123ea59b65e2cdcc2a0ae)
Any idea how to fix this? It's happening with my sigma 75-300mm lenses I haven't used it in over a year. I've cleaned it with a normal cloth by nothing is helping? :
EOS RP + EF to R Adapter + EF 1.4 Teleconverter = Err 01: Canon EOS R Talk Forum: Digital Photography Review
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