The material of this lens hood feels good and is beautiful inside frosted, so that no light is reflected. The mounting and dismounting is really wonderful light and yet the panel wobbles not a bit and will not budge. Mounted upside interfere EW-63C no longer stowing. It would be nice of course if Canon would begin to pack the baffles even when not L lenses to. Even if a lens would be a little more expensive you could save yourself a tedious search yet. But does not change the quality of the iris and I forgive 5 Stars.