I'm sure this has been covered before but I'm not searching with the correct terms, not even sure how to describe it in a few words.
The issue or non-issue I'm noticing right now is every once in while my 7D's shutter actuates slower than normal. For example, I'm shooting full manual at 1/250th of a second, 4.0 aperture, 400 ISO. The shutter actuation is nice and quick but every now and then I hear a slow shutter actuation, sounds like a relatively long exposure around a 1/2 second. The resulting image is still correctly exposed with identical settings untouched.
I have read that during full burst the 7D will still compensate for the amount of light that's available even though the maximum burst rate is selected. I'm curious if this has anything to do with non-burst mode as well?
Only reason I'm worried is I noticed my 40D did same thing and eventually the shutter went out. I don't know if the two had any relation.
Thanks for any help!