Although this is not an "original accessories" from Canon, the hood fits snugly and is processed by no means "cheap" or cheaper. The inside is roughened. Through the technique of the lens (AF rotates the leading section) is only one consistent round dome possible. Tulip shape is unusable due to the AF technique. Therefore, the hood is also correspondingly "small" in order not to obscure the corners with smaller focal length ...
Please be careful when removing or installing the hood. Personally, I always turn off the AF and then turn until it stops. Then can by gently turned further remove the cover or mount in the other's right. Then AF again. Otherwise turning the AF engine with "violence" from the outside, and if that's good I doubt it.
