I fell in love with the lens the moment I started using it. sure, the build quality is cheap. it's all plastic and the focusing sounds like a blender, but the quality of the pictures is amazing for a 120 dollar lens. saturation of colors is excellent, no noticeable chromatic aberration, great sharpness. I prefer this to the t2i stock lens since the colors are more saturated and picture is sharper, not to mention the 1.8f aperture. Some people say they don't use the 18-55mm since they found this lens. I have to disagree. The 18-55 is too versatile to be substituted with this prime 50mm. but this lens definetely takes better pictures than the 18-55 at 50mm.I have a t2i and 3 lens: the 18-55, the 55-250 and this one. I'm not a pro, just a hobbyist and this lens is great for me. 

Question: How is the quality of picture?
Answer: build quality is cheap