Fotodiox Pro Lens Mount Adapter with Auto-Exposure, Auto-Focus and Auto-Aperture, Canon EOS EF EFs Lens to EOS M EF-m Camera Body

When I purchased this item, it had just appeared on Amazon, and there were no customer reviews. But I have been buying Fotodiox products for years, and their quality is consistently excellent. I had been looking at the Canon EOS M Mount Adapter and a couple of other brands, but when I saw the Fotodiox Pro Lens Mount Adapter at less than half the cost of the Canon, it was a no-brainer--go with Fotodiox. With this affordable adapter, my new EOS M camera should become the most versatile tool in my kit!Then before the shipment arrived, two customer reviews were posted here, reporting that the device does not communicate complete information between lens and camera and is unusable with IS and manual focus lenses.My bad. I should have checked the specs. I immediately ordered the Canon adapter, planning to return the Fotodiox. But when the Fotodiox arrived, I thought, wait a minute--I haven't even given it a try. What's it gonna hurt?Well, gosh, the Fotodiox DOES work with my IS lenses--Canon EF 28-135mm f/3.5-5.6 IS USM and Sigma 17-50mm f/2.8 EX DC OS HSM. I tested both lenses with IS switched on and off (don't have any non-autofocus lenses, but I've tested manual focus on these lenses, and it works). It also works with my Canon EF-S 60mm f/2.8 Macro USM.So, autofocus is spot-on, and image stabilization definitely works with this adapter. (Not only is this noticeable in clearer pictures, but I also can hear the stabilizers working.) Aperture and shutter speed info are displayed on the camera's LCD, and if I get an exposure wrong, there are the usual flashing red warnings--which CAN be overridden if I choose. Exactly as if the lens were directly attached to the camera. I don't see how the Canon brand adapter could work any better.There is a lot of chatter in photography forums about how slow EOS M autofocus is, esepcially with EF lenses attached. I was concerned about that because I LOVE my EF 28-135. And it's true; the autofocus is slower than the 22mm pancake--but not as clunky as I was expecting. AF with the Sigma, on the other hand, seems to be about the same as the 22mm pancake.The Fotodiox adapter is made of very well-machined metal, and the finish is excellent. No wobbling, rattling or play anywhere. Lenses seat smoothly in the adapter and click solidly into place. With the adapter + lens assembly attached to my camera, it feels like one seamless piece of equipment.My adapter did not include front/rear caps, but an EF-M cap and a EF or EF-S lens cap should work with it just fine. They're just lying there in the bag, anyway.I give it a five-star endorsement, no questions!

This is the second EF/EF-S to EOS M adapter that I've purchased.The first was a similar product but different brand. It was a complete failure.Both adapters cost the same amount, $39 at time of purchase.The Fotodiox arrived the next day. The other brand took nearly 3 weeks to arrive (I think that was a sign).The Fotodiox packaging is nice, it could be given as a gift.The adapter comes with lens and body caps, some competitor adapters do not have caps.No instructions were included, but the assembly of lens to adapter and adapter to body is pretty straight forward.If a person can't figure that out, they likely won't be able to operate the camera.This Fotodiox adapter is 100x better than the other brand I have, NO comparison at all.I shot 50-60 images the first day, not one error using the Fotodiox product.The other brand I could get 8 to 10 photos, then would get an "Err 60" error message - not good.I've tried 3 different lenses with the Fotodiox adapter and all work as they should.The electronic functions work flawlessly with the Fotodiox adapter. Honestly, AF seems faster with the EF lenses than with the native M mount lenses, this may not be reality, but all lenses tested did work very well.The only issue I have encountered is not with the adapter, but with a lens and Canon M50 combination. While using a Sigma 105mm 1:2.8 Macro HSM lens, the lens itself somewhat gets in the way of M50 red lamp AF assist beam. Not a deal breaker as the Sigma lens and Canon still work very well together. This combination really can produce great images.The Fotodiox EF and M mounting flanges are matte finish metal, the casting and machining look good and result in a solid connection of lens to adapter, adapter to body. There is very minimal rotational movement at the lens to adapter, and adapter to body, not enough to cause camera errors, as with the other brand adapter I have.The Fotodiox has approximately 0.5mm of rotational movement = very good. My other adapter has ±2.5mm of rotational movement, resulting in continual camera error messages.The body housing looks like metal, but is some sort of plastic, or polymer.It is well made and I don't foresee any issues as the important mating surfaces are metal.Possibly the only negative is the tripod adapter. I have not had an issue, but understand how others claim it is a bit loose, or sloppy when fully tightened. I believe this minor issue can be corrected with the addition of a simple thick paper shim, or very thin metal shim.When the tripod-mount knurled nut is FULLY tightened, there is a little "wiggle".If using large lenses, this minor issue may increase. So, be prepared to either permanently bond the tripod mount to the adapter body, or experiment with a shim to tighten things up.I give it a 5 star overall, even though I only offer 4 stars for Material and Durability.The body housing could have been a metal shell, and the tripod mount issue could be resolved. Neither are deal-breakers. This is a very good adapter.I wish I would have purchased this adapter to begin with.

For under forty clams I figured what the hay and pressed the magic Amazonian buy button. Ten days hence it was on my EOS M3 and, indeed, worked well with my EF-s 55-250 STM and 18-135 USM. AF was just as good as native EF-M optics. I tried my old EF 50 1.2L USM and, while it worked fine, the larger optic ran the wee battery in my M3 down very quickly. So this adapter is probably best used with smaller and less power hungry optics.Appearance wise, the Fotodiox Pro looks OEM and blends well with my M3 and most EF-S lenses. Unlike some reviewers here, my sample fit perfectly snug, imparting a seamless feel while shooting. Although the specs claim the Fotodiox is metal, mine feels like plastic and isn't cool to the touch like metal lenses. Of course, maybe it’s actually metal but with a thick plastic based enamel?With an adapter, M series cameras can use EF and EF-S lenses with full AF and auto diaphragm compatibility. And AF performance is as good as a native EF-M lens. My only nibble with the adapter is it's incompatible with system sleep when a lens with Image Stabilization (IS) is used: activate AF and IS runs continuously until the battery dies! In other words, system sleep doesn’t turn IS off. Oddly, even LCD/EVF sleep is delayed by several minutes. The workaround is to disable IS on the EF/EF-s lens (or turn the camera off) but it's easy to forget to do since I’m used to EF-M lenses sleeping within 30 seconds.All in all a well made and functioning adapter considering the low price. If it wasn't for the battery management issue this would be a 5-star deal.