10-Reverse-Canon-49 49MM Macro Reverse Mount Adapter for Canon Models

I initially gave this a one star because I could not believe an adapter is not intended to be reused on different Nikon lenses, so once you put it on its intended to be left on there (make sure you buy a Canon rear cap). BUT I have changed it to 5 star, as having looked at a few of these Nikon to canon adapters, they are all the same in that they are not intended to be reused! So once you put it on the lens it should stay on there.It has absolutely no play and fits Nikon to C100 perfectly. Its solid built as well, so I have changed the score to a 5 and re-ordered another one.

Works perfectly but does not allow focus to infinity as the glass prevents the focus going that far.

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.

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

excellent at what it was designed for