Yes, it's adjustable, but with some EF Canon lenses it's impossible to take stock.

Works like a charm on my Nikon 1 S1 camera and allows me to use my Canon EF lenses! Solid construction!

I use this adapter on my Canon M50 Mark II and am satisfied. The old EF-L/S lenses can be used with it. That makes you want to keep using the old old lenses. The autofocus works without problems. Only the adapter is mostly made of plastic, but this has not affected the functionality so far.

needed an adapter to adapt EF/EF-S lenses to my Canon EOS M50 and I am enthusiastic about this K&F Concept adapter, the part is cheap and fulfills its purpose 100%, I also think the possibility of connecting the camera and lens directly to the Being able to attach the adapter to the tripod means that the weight of larger lenses does not weigh directly on the camera.

Yes, you can use Canon EF lenses on Samsung NX cameras with this. But. Due to the principle, no transmission of metadata (aperture, etc.) to the camera, no possibility to change the aperture; Depending on the lens, not even the focus can be adjusted (which actually makes these lenses unusable) So: This adapter is a good one, but such adapters should be avoided if possible.

Yes... it works perfectly with Canon EOS M cameras. I own Canon EOS M10 and use this adapter most of the time with Canon 50mm 1.8 lens. It is amazing. The autofocus is accurate and fast enough. If you own a Canon EOS M camera, I recommend you this adapter because it is much cheaper than Canon original and there is actually no difference between them. Everything works as it should. I love this adaptor. The best purchase I've made for my camera.

bought the adapter to use my Canon EF 50 1.8 STM and my Canon EF 35 2.0 IS USM on my EOS M. The adapter fits perfectly on my EOS M. The lenses are almost too tight compared to the direct ones themselves, which suggests comparatively high manufacturing tolerances and is consistent with some other reports (hence only four out of five possible stars). Both lenses are fully functional and the autofocus also works perfectly. For example, I can't determine (without having measured this) that the EF lenses with the adapter focus more slowly on my EOS M than the original EFM lenses. I also find the low weight of the adapter very pleasant, so that at least my two EF lenses are not too top-heavy on the EOS M. Addendum on 04/26/2016: In the meantime I have to revise my first impression, because the adapter only seems to have been a little too tight at first. So I'm upgrading my rating by one star to 5 stars.

brief history of why I am writing here: my wife is a professional photographer (those who are interested can find Uschi at engelmann-fotografie.de) I myself am a stage manager and look after around 700 events in all quality classes every year. Photo logging is often desired, but there is usually no budget for a fully paid service provider at the start. I made a virtue out of necessity: I bought the Canon M50 and with the adapter I have access to all my wife's fat lenses. IA I'm on the road with a small bag and my equipment, do the job on the side and despite "little time and little knowledge" I have a great arsenal of PICs available, which are also paid for. AF autofocus adapter EF/EF-S Canon lenses on Canon EOS M cameras from K&F Concept The premium images can be edited afterwards on request. Specifically to the adapter: the lock fits on both sides, all tested lenses work properly. no gaps or other problems. However, this refers to a 2-day test period, if anything changes, I will upgrade :-)