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Title: excellent lens and a fantastic value
Review: I owned this lens for about a year before upgrading to the image stabilized f/2.8 version. Overall I was very happy with the f/4 lens and miss having it available because of the significantly lower weight. Sharpness is amazing and comparable for both lenses, and the f/4 can provide plenty of background blur. If you are shooting mostly outdoors I would recommend the f/4.
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