I had previously only the standard lens of my Canon 550D and was not really satisfied. Share this item I ordered then because of the really good reviews and rightly so! Meanwhile, I only use this lens as one due to the diaphragm simply can therefore shoot good pictures any time of day. For the money, a really great lens. The only drawbacks are that the AF / MF switch acts fairly inexpensive and the AF itself quite loud and lame. But if one looks at the price, you can also understand that. It's also actually not particularly disturbing.
A buddy has a lot More expensive 1: 1.4 and regret the purchase after it with this 1: 1.8 lens has photographed;) I can really recommend this lens every Canon photographer :)