Err 01 Communications btwn camera and lens is faulty. Clean the lens contacts in Canon EOS Mount Posted March 9, 2010 <p>I had the same problem today, with a lens I have been using for a while. I cleaned it with the proper cleaning fluid and a cotton bud and all is working well again.</p>
Err 01 Communications btwn camera and lens is faulty. Clean the lens contacts
in Canon EOS Mount
Posted