This is a great mount for lenses that have a built-in manual aperture adjustment, not the best for AF lenses.

The adapter fits perfectly without wobbling and now connects my second-hand 500 mm mirror telephoto lens from Tokina with the current Canon cameras with EF connection. The mechanical quality of the product is really very good. Please note: An autofocus function is not transferred under any circumstances.

This adapter works exactly as it should. All old Canon FD lenses work on my 80 D.Bin very happy with it.

Sustainability at its finest. This is how you can make something new out of old. Works perfectly

Well engineered and does the job at at price that is very good value.

Fits. Perfect.

It works as stated. It's good to read the instructions before installing, in order to remove.

It fit my camera perfectly. My nifty fifty lens works perfectly.

With regard to the adapters from various manufacturers, which were often not exactly positive and the mostly positive voices about this product, I was very curious how the adapter would interact with my old lenses and the EOS 600 D from Canon.
I tested the adapter with old original Canon lenses:

1. Macro lens 35mm - Various plant motifs were photographed and the result was impressive. The objects to be photographed were also displayed on the camera's fold-out screen. In some cases, however, I had the impression that the light sensitivity setting was not reproduced faithfully on the screen. But after I experimented a bit with it, it worked satisfactorily.
2. Zoom lens 70 - 210 mm - The zoom lens can be focused without any problems even with the largest zoom factor (which has been criticized with many other adapters. The images in the viewfinder are displayed correctly on the camera screen. And the resulting images are flawless.

The The adapter itself can be easily attached to the camera and does not come loose when changing the lens. The two lenses used could also be attached to the adapter without any problems and are firmly in place.

Overall I am totally satisfied with the adapter. I do not know if a professional would do the same would see, but for me the resulting images are really good, especially when you consider how much money you save by using the old lenses.

So far so good. Although I have slight doubts over its critical focus abilities with super wide angle lenses which is the tell tale sign of not being micro-millimeter perfect.