Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great value

Great optics but the plastic mount makes it feel a bit unsubstantial (the only reason for the 4 stars). You will, however, be very impressed with the sharpness and the blurr factor when used at fast apertures; it is a great portrait lens. If you have a Canon EF mount, you just cannot justify not owning it when it is under $100???Unless you have an "L" class lens to cover this range, in which case you probably wouldn't be reading this review.