05-08-2026 08:59 AM
I am a high school photo teacher. We purchased a canon zoom lens EF 24-70 mm 1:4 L IS USM lens with a grant last year. Unfortunately now we keep getting an error message saying there is a connection error with the lens. I have tried cleaning the connection points but it still does not work. Help?
05-08-2026 09:02 AM - edited 05-08-2026 09:03 AM
What camera?
Do other lenses work on the same camera?
How far back? If less than a year, it should still be under warranty, send it back.
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