A good opening for the price. This makes me a 50mm equivalent for my D7000, low distortion, enough bright lens allows good effects of depth of field. The optical quality is significantly better than the 18-105mm supplied with the camera kit. It is also nice for the weight to the requirement that it not so embarrassing to have to approach the object photographed. For the price, really good. From Amazon: with. I respect always fast delivery, well packaged.