I use this filter on the lenses Canon 24-105 L IS USM and 70-200 2.8L IS USM II. It is easy to mount and remove. Very good I like it with mounted Filter nor the lens cap can be used. The lens cap holds as safe as directly on the lens. With the 24-105 I could not notice any vignetting in wide angle position, so it is fully compatible on this lens. The build quality is beyond doubt. Here it is really worth spending the extra cost compared to cheaper products! Also good is the image quality, there is nothing to complain about. Only the adjustment or rotation is a bit tight and stiff. I suspect that will sit less fixed by the use of time. The bottom line is the tool of professionals - expensive and good!