01-17-2012, 07:04 PM
I can manually autofocus while on a tripod with liveview, and do manual focus tethered to my pc for product photography, but no way can I manually focus handholding the camera thru the viewfinder. I have some fine manual focus lenses, its my eyesight that is the issue. I have tried with my 5D MK II, and my 1D MK III using alternate focus screens, I just can't see the sharpest focus point.