Reviewed by 2 customers
Everything works as expected with this unit. It's tight fitting, there is very little play if any at all. I wouldn't use it with heavier Tele lenses with out a tripod collar and maybe even additional support on some 15mm rods. But other than that, for under 40 bucks, it's everything I needed. Great way to get extreme Tele lengths on a gh3, especially with ETC mode.
I'm using it with my Olympus OM-D EM5 to attach my EOS lenses. It works with EF and EF-S lenses. The fitting is tight and secure, it doesn't move at all when mounted to the lens or camera. Naturally it's only a mechanical mount so not autofocus or aperture control. You can change the aperture of the lens with a Canon body removing the lens while pressing the depth of field preview. It's more for emergency use or tripod work but the results are good if you nail the focus. The only issue is the button to remove the lens from the adapter. It does work correctly but at first I thought it was a push button and is not, you have to slide down the button. It took me few minutes to guess how to remove the lens. The manufacturer should add a note or stamp to instruct that.