58mm canon lens hood

Directional light makes better photos. The idea is to receive light in the direction the camera is pointing and having a hood on the lens should protect it if the lens may fall."The reason for the longer hood" printed with a brim and a 0.4mm nossel. On a 18-55mm lens the hoods interference with the picture is 18mm to about 35mm.above 35mm should be good. Although the round photo could be cool.