Lately, I start getting this message when not shooting at maximum aperture with a Canon 55-250mm lens:
Err 01 Communications between the camera and lens is faulty. Clean the lens contacts.
I tried to fix the problem cleaning the contacts with a dry cloth but didn't work. Also tested with other cameras and the same result.
The error appears even if I have the lens at it's maximum aperture and change the zoom and that aperture is not the maximum for the new position.
Is there something else I can do other than sending it to the service center?