It's a well-made adapter that works perfectly, both on the lens mount and on the camera. The only negative is the ring, which locks and releases the exposure, allowing the rotation to rotate with minimal force applied, causing the ring to rotate unintentionally. There should be more resistance. Besides, quality and price are good product.

If the crush ring is not attached in the Lock position, the aperture blade will not move in the Open position. The EOS M-mount adapter is built better than the SONY E-mount adapter with just the narrower pin (laughs), but despite the fact that the body is too small, the lens weighs quite a bit. So if it is not an adapter with a tripod seat, the mount and the camera screw will be put under enormous stress. Most importantly, FD adapters don't require any tools, and there are few things that detach the tripod seat, so that's an issue.

Ring to adapt Canon FD lenses to EOS R-mount bodies with no electronic contact so no autofocus You have to use the case manually to adjust it. ISO and speed, the aperture is set on the lens

It solved the problem of being able to use a Sigma 18-200 lens with a Pentax mount without an aperture ring on a Sony A6500.

You can also use the hood with this adapter with NEW non-locking FD mount lenses. After attaching the lens to the adapter, if you turn the LOCK-OPEN ring on the adapter to LOCK, the aperture stop will move in accordance with the aperture ring on the lens. The same applies to FD mount lenses, which have a locking mechanism. It is therefore an adapter that can be used with aperture both for FD and NEW FD whether there is a locking mechanism or not.

NIK-NIK Z-Ring single ring, without coupling: Nikon Z-mount male mount, Nikon F-mount mount female for pre-AI, AI and AIS lenses. You can therefore use old lenses whose pre-AI bayonet can damage the FTZ. No problem with a Nikon Z: the light is measured at the actual aperture and manual focusing is done with colored markings in the viewfinder. So I use my old 50mm 1.4, my 20mm 3.5 UD, my 300 4.5 Nikkor H which are all 50 years old... and my AI 50.135 and 200. The ring is well built, no play and we have infinity. NIK(G)-NIK Z-Ring Attention, for Nikon G lenses you need the Nikon FTZ or the NIK(G)-NIK Z-Ring, which allows you to maneuver the aperture, which do not have a ring on the lens. With the NIK-NIK Z, the G lens remains closed at the smallest aperture, so no modification is possible. Attention should also be paid to the IBIS: you need to record the focal length of the manual lens and specify it when using the camera: vibration compensation is much more effective if the Z camera knows the focal length.

had bought a Fuji X-T10 mirrorless camera and was waiting for a Fuji lens to arrive so I could use it. I had a Nikon 35mm g at home and I was thinking about using it on my Fuji while waiting for the proprietary lens. After careful research I have ordered this wonderful adapter which I will try to describe below. It arrived in a small cardboard box wrapped in shockproof plastic. The adapter is made of excellent material, it is made entirely of metal and is pleasing to the eye. It can be installed easily and quickly on both sides. It has a metal ring that is used to close and open the membrane. That last feature deserves an explanation: the adapter has no electrical contacts, so any lens you mount will lose autofocus. If you mount a lens that is equipped with an aperture ring, you can use it without any problems because the adapter does not interfere with this ring. On the other hand, if you mount a lens without an aperture ring, as in my case, you can have trouble selecting the apertures that the mirrorless camera actually no longer shows on the display. However, this adapter features a ring for minimal control of the diaphragms. To get the best out of it, before mounting the lens, make sure the adapter ring is fully closed (smaller ball), then mount the lens. Then mount the adapter on the camera. In the case of the XT-10, I had to select non-lens speech noise from the settings menu and that was it. Despite the lack of autofocus and minimal control over the apertures, I took wonderful photos. Highly recommended for those who are already experts at manual focusing.

The mount adapter is not permanent. I mean, once you put it on the lens, there is a way to remove it and switch it to another lens if you need to. I got this for a Nikon mount lens that I wanted to put on my canon mirrorless. It snaps on solid and secure. Holds the lens on the camera really nice. No shake or play. There is a small tab/button that you have to press in order for it to release from your lens. The release is a little tight but nothing that can't be handled by a 13 year old or older.