Instruct: Classify Amazon reviews into positive or negative sentiment
Query: I DO NOT Recommend This Lens

This lens takes beautiful photos. BUT I have had this lens for two years and the autofocus has needed repair twice: once for free by Canon, and once for $90 by Canon. The build quality is LOW. For the price, I suggest the 50mm f1.8 lens available for less than a hundred dollars. This is not my first repair of a Canon item; in my experience, Canon products work great when they are working, but they are not very durable and require frequent, expensive repairs.