I had the same problem with my 18-135 IS STM. The lens acted like it was still in AF when I switched the button from AF to M. I changed AF methods in the menu from FlexiZone to Quick Mode, and the problem went away. Oddly, when I then switched back t...
I had the same problem for months and was about to send the lens in for repair. Whenever I switched from AF to M on the lens, the lens continued to act like it was still in AF mode. The problem went away when I switched AF methods in the menu. I simp...
