Guess again.The cheapies I use on FE bodies look/work the same as an AR-1. Hard plastic inside a metal collar that screws into the outer threaded circumference of the shutter button. The AR-1 is just overkill/sucker bait for this application. Those large, threaded, thumb tack-like buttons work on the F3--use an MD-4 and you needn't bother.
Originally Posted by brucemuir