Fotodiox Pro Lens Mount Adapter Compatible with M42 Type 1 Screw Mount SLR Lens to Canon EOS (EF, EF-S) Mount D/SLR Camera Body - with Gen10 Focus Confirmation Chip

very nice fit. easy to attach and detach. i've used cheap chinese adapters in the past and i'm glad i'm using the real deal. you get what you pay for

Super product

This is a good product, fits well with the camera body. Loved it. Worth for money. Great experience of macro photography with old lens.

I have been looking for an adaptor that I can use to adapt an RE Auto Topcor 58mm 1.4 lens to use with my Canon DSLR for months and all standard Exakta to EF adaptors do not work as the RE Topcor lenses have an extra pin on the outer part of the lens mount which will not work with standard adaptors. However this adaptor will support the lens and I am delighted with the results and having the lens element in the adaptor has not made much difference to the output I was hoping for , see image taken of my cat using the Re Auto Topcor lens on my Canon 7D

I bought this, thinking that it might just revive an old, but pristine,Yashica/Kyocera AF 24mm lens that has been stuck in a cupboard unused for years. Sadly it did not – the rear element of the 24mm lens, when focused on infinity, projects about 5mm behind the camera mount. Five millimeters isn’t much – but it is enough to cause the rear of the lens to collide with the optics within the adapter. Because of this restriction on the rear travel of the lens, the maximum focus distance for the lens drops to about 350mm. Infinity - it most assuredly is not. The original Amazon listing noted that the adapter's optics were removable (for macro work) – this may be so – but no instructions were provided on how to correctly remove the glass. The optics seemed tightly screwed down and I couldn't unscrew it by hand (it sits in a confined space which is difficult to get your fingers into) – nor are there any slots into which a spanning screwdriver might fit to assist with removal. As, by this point I had decided to return the item, I did not attempt the dubious and potentially damaging technique of tackling it with pliers!On the plus side, the item itself seems nicely constructed – though the blue aperture control ring is a little narrow, too smooth and is not raised above the rest of the body – so it makes access to the aperture control a bit fiddly. As I don't have any other Yashica AF lenses I can't comment on its suitability for use with them – I can only say that it is (almost) entirely unsuitable for the 24mm lens - and for that reason can only give it 2 stars.

I almost ruined a thousand pound lens due to this adapter. It’s not designed for use on all C/Y lenses and this got stuck on one of my Contax Zeiss lenses. The metal pin on the lens got caught on the C/Y side where the channel carved for it wasn’t deep enough. Essentially I had to cut this thing off. Only purchase of the seller agrees to cover the cost of repair should this thing damage your kit.Be Warned!

After having bought this adapter, i received the wrong one, namely the V.2 (which has the internal flange). However, Fotodiox promptly decided to ship another one to me, this time the V.1 - the one i wanted. So, for the company itself i rate them with 5 stars.Now for the adapter: It feels really, really well made / machined, it is in fact a piece of the highest quality; at the body, with a lens attached to it, it gives confidence as both lens and the adapter fit the camera as they should, as if they were a Canon lens - with that same nice and safe feeling that we are used to with the Canon lenses. One thing i have to point out, though, is that there is a little bit of rotational play due to the fact that the camera's safety button that is released after the lens (or the adapter) is turn all the way until it stops - which prevents any lens to come out accidentally - seems to be smaller than the hole in the adapter; this won't affect taking photos, it is just a bit unnerving. However, i think that this may be done this way so to keep those adapters universal to the several Canon bodies out there. Any way, now i have a nice piece of equipment that does allow me to use M42 lenses on the Canon 5D i own. And that's a joy and a pleasure. So, 5 stars for it.P.S.: For me, the chip and the feature to help focus (the green light) really helps me to focus, as i have the default screen in my camera.

It works in part, but does not get to infinity zoomed out. Would therefore not recommend for Yashica zoom lens