05-05-2022 12:05 AM
Using M6 Mark ii with EF M lens 18-55 mm, AF is no longer working, will only work on manual setting. Have cleaned contacts, still no luck. Even tried with new EF M lens 15-45 mm with no luck. AF works with 70-200 USM 2.8L lens with Fotodiox Pro EF-EOS (M) auto adapter. Any suggestions to get AF working again?
05-05-2022 11:10 AM
Cleaning the contacts never helps and if done incorrectly can do permanent damage to them. The only thing to use is a qtip and a little denatured alcohol. The act of mounting and removing the lens is enough to keep the contacts 'clean'. They are gold plated and very fragile. In you case I would call Canon. 1 (800) 652-2666
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