Features:

  • VILTROX EF-EOS M2 mount adapter is designed to allow Canon EF-mount series lenses to be used on interchangeable-lens digital cameras that compatible with EF-M lens.
  • Focal length is multiplied by 0.71 based on the original (equivalent focal length =focal length x 0.71), which helps enlarge 1 level aperture.
  • With auto focusing function - Can increase the lens 3 f-stop, increasing the amount of light into the virtual background,can better highlight the theme
  • It is also built in 4 groups,4pcs optical glasses. it can achieve functions of EXIF signal transmission, AF(autofocus) and adjustable aperture,etc.
  • Equipped with USB interface, can realize software upgrade. Can perfect new functions of the lens mount adapter and fix bugs according to follow-up upgrades.
Improves everything!!!

Wow, so far so good. Aside from not able to use EF-S lens, everything else is very good! I used the Canon 17-40 f4 wide zoom lens on the M50 and did notice an increase brightness and wider field of view. Without the adapter, one test shot had f4 @ 1/80 @ iso 4000. It was a relatively dim room. With the adapter, the M50 camera had the exposure at f4 @ 1/80 @ ISO 1600. That alone improved the noise. On paper it’s supposed to give you a 1 stop increase on your lens so taking random test shots with the same lens, the camera recognizes the 17-40 f4 as a 19-45 f2.8. This is a well worth investment... Canon, you better start making an adapter like this!!

A great purchase

I didn’t know how this was going to affect my photos. I was told it would give me a full frame look. I attached it and my 50mm to my M50 and been shooting it ever since. It gives me the true wide angle that I would expect from a 50mm. It also gives me a 1.2f on my 1.8f 50mm

Simply amazing!

What an amazing little gadget. Before I bought it, I watch a bunch of YouTube videos and read a bunch or articles on it. Needless to say, I was eager for its arrival. I attached it to my Canon mirrorless and then attached my Canon f/4 24-105mm lens to it.. The reading on my screen: F/2.8. Awesome. Next, I tried it on my 70-300mm 4-5.6 zoom and tried it at the long end. My screen displayed F/4. Again, awesome! So.. I was able to take a photo a stop lower ISO. It may not sound like a lot but... My main reason for this purchase was for use indoors in the auditorium at my kids' school. They never have it very bright up on stage and the amount of light keeps your camera at either a high ISO or a shutter slow shutter speed. When taking photos of your kids, so much more detail can be kept at 3200 vs 6400 ISO. Just awesome. I wanted a full frame camera but not the size or cost... For $156 (At time of purchase) it was WELL worth it. Quality.. Build quality is great. I also use a regular Comlite adapter and I'd say they're about the same build. Photo quality.. Seems fine. I'm happy... I'm also just a Dad who takes pictures of his kids. If you want a professional opinion, I'm not the right guy to provide it. Am I happy with the purchase: YES

Initial Review: Beyond my expectations

Ordered this, quite honestly with the thought “I can always return it”... So far (one day use on my m50) it’s a keeper. No noticeable photo degradation, even on the edges. This will just stay on my m50 for the foreseeable future. It’s nice to have the same lens expectations jumping from my full frame to my crop. This review is only based on day one. Will update if things change.

First one would not work with my M50 but seller worked with me and sent replacement that works great

Update: Got my replacement from the seller and it works great! He was very easy to work with. I will buy from him again! Bought it to use with my Canon M50 and Canon 100mm F2.8L and Canon 24-105 F4 lenses. The adaptor worked one time. I didn't need to use it again until now and it will not work. It will not recognize an aperture and stays in manual focus (even though my camera and lens are in auto focus.) When I fully push down the shutter release button it says error: camera and lens connection is not working. I have cleaned the lens and camera connections, attached it as stated in the directions to no avail. Since it's been over 3 months, I cannot return it to Amazon but the seller is going to allow me to send it back for an exchange so I’ll repost an update once I receive it back and test it out. Service and communication from the seller as been great.

Absolutely awesome + 1 f-stop!!!

So I got myself a Canon M50. Very similar to the Canon 77D I already owned features-wise, but significantly smaller and lighter. I was a little bummed that I needed to get all new glass because of the EF-M mount, but then it turns out that there’s adapters that let you use your EF and EF-S lenses on the EF-M mount, albeit with the same 1.6x crop factor as my 77D, both being crop-sensor cameras. I'd been watching M50 review videos on YouTube and in one of them someone mentioned the Viltrox EF-EOS M2 Lens Adapter. Honestly, it sounded too good to be true at first. So you’re telling me I get an adapter that will make my EF lenses look almost their actual focal length (about 1.1x instead of 1.6x) AND also gain a full f-stop for about 150 USD? Yeah, right… I kept watching reviews on the Viltrox adapter until curiosity finally got the best of me. I ended up buying one from Amazon, hoping for the best. First thing I did, I had to try my beloved nifty-fifty (EF 50mm f/1.8 STM lens). Using the Viltrox adapter it now looks like a 56-57 mm lens (50 * 1.6 * .071) which is not bad at all. But wait, when using the lens and adjusting the aperture on the camera, it didn’t stop at f/1.8 but rather all the way down to f/1.2! My lens, brand new, goes for 125 USD on Canon’s website. The 50mm f/1.2 also on Canon’s website goes for 1,349 USD. I’m getting the aperture of a 1,300 dollar lens for less than 300 dollars (lens + Viltrox adapter). Sure, it’s not quite the same but I’m very much a beginner/enthusiast, so it's more than enough for me right now. That’s an excellent price point for such an awesome aperture on a prime lens. That’s only talking about the one lens, though. Got any EF lenses sitting around? Pop them into this glorious thing right here and get almost full-frame images out of them with extra aperture. Couldn’t be happier with my purchase. Get this adapter NOW!

Great addition to my Canon mirror-less camera

I did some research online before buying the Viltrox speed-booster for my camera and I am happy to say that I wasn't disappointed. It opens up a whole new range of lenses to my Canon M50. It works very well on both my Canon 100mm f2 and 50mm f1.4 Ultrasonic lenses and minimizes the sensor crop.

GAME CHANGER for Canon M mount...I have the M50

If you have a Canon M mount camera and EF lenses, this is a no brainer!! 1. Most efs lens will not work without heavy vignetting, might damage glass element 2. There is a glass element inside the adapter, which slight effect image quality 3. the crop factor has less effect on focal length and aperture, brings new life to your lenses 4.limited number of native M mount lenses exist, this adapter solves problems of ef primes and zooms 5.Soild hard plastic build, metal mounts and removable tripod mount (hex tool did not come with mine) 6.adapter fits flush to camera body, no wiggle/play 7.works well with manual ef lenses such as rokinon and m42 with canon adapter 8.I wish stabilization and removable nd filter slot was added to this adapter, but for the price you can't beat this!!

Overall happy with Viltrox Speed Booster.

The one limitation is the fact that it will not boost speed beyond f1. Both 1,8 and 1.4 lenses will boost to 1. The device really shines at the 2.8, 4, and higher settings. One limitation is the fact that total manual lenses, those without electronic contacts create conflict with the device. Perhaps a firmware update could fix this problem. Other than that, operating within the limitations makes the Viltrox adapter a great and wise investment.

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