VILTROX EF-EOS M2 Auto Focus Lens Adapter 0.71x Reducer Speed Booster for Canon EF Mount Lens to Canon EF-M Mount Mirrorless Camera EOS-M M2 M3 M5 M6 M10 M50 M100

I shoot primarily full frame on my Canon 5D Mark IV for my commercial photography, but carrying that around for street photography is just not very feasible.I wanted a small, full-frame, easy to use, quick to deploy camera. The obvious answer was the Lieca Q2, but I don't have that kind of cash to throw around so my next option was to buy an M6 Mark II, put this adapter on the front and use all of my full frame lenses at nearly no crop (well, 1.1 times crop, so nearly nothing) with the added bonus that it adds an extra stop of light, so a 24mm F2.8 becomes a 26.4mm F2 lens. Absolutely the perfect combination, now I can carry this camera around and use it with any of my full frame lenses, gaining a stop of light too!In the picture you can see it with a massive 24-35 F2 from Sigma. This lens is effectively a 26.4 to 38.5 F1.4 lens now and although it is very front heavy, it works really well.The adapter also has a tripod mount, you can balance these bigger lenses a bit better and relieve some of the stress on the camera mount when on a tripod.You can update the firmware of the adapter to the latest version which seems to have resolve some old issue where it would drain the battery of the camera even with the camera off, I've not had that issue at all.Lastly, image quality. I've not seen any real detriment to image quality with the addition of this adapter, the optics on it seem high quality enough. I do have the original Canon adapter (not a speedbooster) and pixel peeping didn't show any significant quality difference from a non-optic adapter to this one. The second picture (the one of the Omega watch) was shot using the M6 Mark II and this adapter with a Sigma 105mm F2.8 Macro Lens. You can be the judge on whether it resolves good quality or not :)It might seem a little expensive but in photography terms this is cheap, especially if you already have a line of full frame lenses (particularly primes you are used to shooting)

I'm using this to adapt Canon "L" glass to the Fujifilm X-H2. When I initially received the adapter I put the latest firmware on. However, when I started using the adapter with my lenses and the X-H2, is was a total disaster: the autofocus on all lenses just "hunted" and I frequently got a green focus lock indication, when the lens was blatantly out-of-focus; I had to switch to manual focus mode and use focus "peaking" to get anything in focus. Not a good start. However, a little research on't web indicated that things started to go t*ts up with this adapter at firmware V2.28 and that V2.26 was more stable. So, with little to lose (as I would have returned the adapter had things not improved) I downgraded the firmware to V2.26; and et voila everything worked on all my lenses. And the most amazing thing is that it worked just as well with video as stills; I was using a Sony A7 iii with an adapter and although stills were ok with auto focus video was a disaster. So, YMMV but whatever lenses and body combination you have, if you get this adapter, and things don't work properly, try V2.26 of the firmware before you send it back. I'm giving it four stars because all my L glass works as if it were native (or very near if not) and loses the extra star due to the hassle of having to research firmware that would enable correct functionality with my equipment. The image shows Rayman (looking a little dusty these days) shot with EF 24-70 f/2.8 USM L (MK1) and the Fujifilm X-H2 with this adapter.

I have a Olympus OMD EM10 III and also an old 35mm Canon camera.I forked out a substantial amount on lenses in the 2002 just to be overtaken by the digital revolution on cameras.Now finally I bought a lens adaptor to try and use my Canon lenses.It was important for me to be able to have auto focus and that the camera works with the lens without any major issues.It works for my EF 28-135mm just fine and even the EF 28-105 works despite not being on the list of supported lenses.I ran some test for clarity and as an amateur I can not spot any lens issues on the pictures.Yes auto-focus is sometimes a bit slow but again I did not expect the same performance as with Olympus lenses.I am very happy with the product and I can reuse my old lenses.TBH those big lenses are heavy and for a "day out" I'd probably use the original Olympus lenses so I don't have to carry the weight.For a bit more experimental picture taking I certainly would use the big Canon lenses.Best of both worlds really.Anyway the adaptor worked out of the box with my combination of camera and lenses and even though there is a firmware update available I did not install it on the grounds the "if it works why fix it"A bit on the expensive side but I don't regret my purchase.

When i received it i was blow away by how much wide it makes my sigme 18-35 then realized it wouldn't focus to infinity. After some research its a fairly simple fix but isnt completely fixed with other lenses. Also one of my old cheaper canon lenses wont work on the adapter so i can change the aperture of the lens which is annoying.

The same results as using a Metabones adapter. It doesn't work with all lenses - my Tamron lenses, for instance don't work with it at all, but all my Canon lenses do. The extra stop that you get really helps in low light conditions. Excellent value for money

I had purchased the speed booster for my gh5 and although it fits quite well onto the camera, IT DOES NOT WORK with the lens. The Lense is completely loose and upon further research, this is a very common issue