Product Description Hoods are one of the most important accessories for each lens you own. A lens hood provides multiple functions: it forms the lens from stray light, improving contrast and image quality, in inclement weather, which may be consistent moisture or wind debris off the lens support, and protects the barrel from the inevitable impacts against The walls, door frames and other physical obstacles. . . . More>>
Canon EW75II Lens Hood for Canon EF 20 f/2.8 & EF 20-35mm f/2.8L SLR Lens

This hood is a real recommendation for the Canon 20 millimeters have mussMit the large front lens and the “not so good” Glare is produced when the sun hits them at an angle wrong, this hood is a real “must have” — Accessories! Rating: 5 / 5
When you begin to venture into the land of ultra-wide angle, a lens hood increasingly less significant in terms of image quality, but it’s still beautiful, a bill for the administration, it stops, and for the protection of the lens . My only complaint about this goal is that it works rolling out of place, if they are the 20mm / 2 uses seems to be vulnerable. 8 lenses. Just keep it under control, you should be good, but more than one of my photographs was from this umbrella, which surprises a cameo in ruins. Rating: 3 / 5