This doesn't make sense, I have the same error and am able to use the video function of my 7d without any problems but when I try take a picture I get the ERR 40 and have to shut it down and take the battery out to restart it. If it had anything to do with the contacts on the battery compartment...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.