Yes what to say already grown to a lens hood.
So at first I was amazed that one this here is no longer "screw" on the lens can / must
Here are just four "noses" available by pressing two wells (on the outside) disappear inside, then put on the lens and let go, then she sits.
But unlike the "screwed" it does not fit tightly but can be rotated. Is not that bad, do not störts.
And what wrote the Rezesionist here which awarded only 2 points has the iris can make the wrong orientation when the lens is not true.
This is just like when you try to do right around it. So everything is working as usual except being the attachment to the lens.
The quality is as you're used to from Canon.
