I will start by saying that I own a Nikon D3400 and I have about 20 different lenses for it. I found a Cannon T6 for 50$ but the seller didn't know if it worked. I purchased a set of batteries (20$) and THIS adaptor for it (to not spend another 50$ on a lens). It arrived quickly and I was excited to put this Canon to Nikon adapter on my Canon T6. I was bummed when it wouldn't lock in (the hole was a little too narrow for the lens stopper that my camera has) but thankfully I had a diamond wood carving tip that was small enough to shsve off a little metal (and make the hole wider). I did JUST that and it worked like a charm. To remove the lens, you have to eject the adapter first which is kind of troublesome. A thing I really didn't like was that the aluminum ring (the one that holds the actualy NIKON HALF of this adapter) is a little too wide (or too skiny) and the Nikon Lens Caps I have do not fit the adapter. That means that I havr to remove the adapter and use a Canon Body Cap or leave my lens on at all times. Both of which I don't like the sound of.

Overall for 20$ I think this is definitely worth the buy. I have owned it for a few days and no issues yet. I'll keep you guys updated