Might be one of the custom settings I have set but for some reason when I press the af button on my mb-d10 grip it doesn't auto focus. Instead the AE lock indicator lights up in the view finder. The camera is set to af only with the af button. When I press it on the body it works like it's supposed to. I went through all of the custom settings and tried to find one that would be causing this but had no luck. Any ideas?