Very good build quality (but this is the Canon, we usually) fixed without problems on my EF-S 17-55 mm (well use the red marks on the front soleil_1 / 4 turn between the 2 red marks). There the felt inside the visor to avoid parasitic reflections (I hope it will age well ...). Once attached to the objo, the set is really awesome, here does it well! To store it in the tote, simply mount it upside down on the goal (tulip towards the housing) and you can then put the lens cap (very difficult when the sun visor is in the normal up ). That is all except the price may seem high (but good quality is there!) And especially that Canon could give the sun visor with the objective (as in L series) saw the price of one (+ 800). Shipping and delivery time OK, congratulations Amazon!