I have a 550d and a lens that can be manually focused in auto focus mode and the manual/auto switch is messed up and really hard to switch. Is there by any chance a way to switch to manual focus with the camera rather than the lens? Basically, just tell it to not focus when I release the shutter? I don't believe there is anything in the stock firmware, and I can't find anything in ML, but maybe I missed something.
Read your camera manual. Your looking for the custom functions.
https://www.google.com/search?q=back+button+focus
Hey wow, I had no idea this existed. Thanks.