Summary: This product does exactly as it says. It's a hood cover for the Canon 50mm lens. The ONLY thing I dislike about it is the hood itself isn't very sturdy. When you press the buttons on the side to slip it onto the adapter, it squishes the lens hood so it's no longer a perfect circle. Making it a bit difficult to get on. I was scared at first trying to take it on/off thinking I might break it.
Summary: I bought the lens hood to sharpen up my pictures by eliminating reflected light. It makes a noticeable difference at a small cost. I wish the hood was made with a more rugged plastic. When putting the hood onto the lens, you must squeeze the sides to retract tabs on the hood. The whole hood bends, making it harder to fit onto the included adapter. Otherwise, a good addition that offers nice protection for your lens.
Pros: Good Lens Protection, Improves Function, Lightweight
Summary: Lens hoods are very useful accessories to have on every lens. Not only do they block out non-image causing light, they protect the lens from bumps, debris, and moisture. This particular lens hood does not have the best design. This is partly due to the design of the lens too. The adapter ring for this hood screws into the threads for filters, and the hood clips onto this adapter.
Summary: I think this was a good purchase, and i do not regret this purchase at all, but I feel that this was an accessory that could have come with the 50mm lens itself. Also, i have seen some complain that it's not a screw on hood....that's really not a big of a deal as some made it out to be. I'm glad to have this hood though for protection for the lens as well as doing all lens hoods do.