It has horrible, hashy background bokeh. it shoots very poorly directly toward bright light sources, with massive green lens flare ruining images--it is worse against the light than many zoom lenses are, which is basically inexcusable for a 50mm prime lens, but then, it's made by Canon to be the lightest and lowest-cost lens possible to make, and so it's a cheap POS design, with one less element than would ideally be the minimum for a 50mm, AND with a crude 1930's style 5-blade diaphragm (what a joke!). The lens has a plastic lens mount, and it is held together by plastic rivets, not by screws, so if the lens is smacked firmly, it suffers from what Kwanon calls "barrel separation"...ie, the lens snaps into two pieces. It's "sharp" enough,sure, but the images it produces are sickening on scenes that have busy backdrops. It is the $4.99 jug wine of the lens world.