Quote Originally Posted by ChadS View Post
I need to have less than 1 pixel's displacement over a series of 1000 captures or so. The trouble is the mirror slap. I know how to lock it up and then shoot a picture but I'd love to leave it up and locked out of the way. Anyways, 1 pixel of motion is about 40 micron at 3 feet away (gotta love mixed units - at a meter away) which is about 8 arcseconds of displacement.
ChadS:
With your tolerance, I do not think the play in the mount of the lens to the camera will allow that. There is a fair amount of rotaional slop in the connection to the camera body. You need to find a way to fix the lens rotaionally to the body if you want that kind of tolerance. My lenses I can feel that rotational play, and it is quite significant on some (such as my 100-400L).

As for fixing the mirror up issue - all you have to do is use live view, and then the mirror stays up.