For the price, you cannot beat this. The construction feels strong and good quality. You get the options to use your other lenses minus anything other than basic. It will not change the F-stop, and you will have to manually focus it. I would give it 3.5 stars for these reasons, but it is what it is! Zero true complaints from me.
28/04/2020
originally purchased a different adapter to attach a cannon lens onto my samsung camera but it didn't fit. So I tried this one and it fits perfectly and locks in place with no issue. It is not an electronic powered so you must shoot in manual which is not an issue if you are used to it. This is great to be able to expand the lenses for samsung cameras since they are limited in option and are sometimes way more expensive than finding a used cannon lens. I have not extensively used this item due to the cannon lens that I purchased is a old 300mm and I currently prefer a different lens. Hopefully in the future I find a cannon lens I like and can use this adapter again.
04/01/2017