I won't say much. As an amateur (for home, for family, on crop, of course) I can say that I am more pleased with the purchase of this lens than the camera itself. Photos come out great. Well, yes, it buzzes a little, plastic, at 1.8 it sometimes misses a little, but rarely, at 2.0 it’s generally excellent (we don’t forget about its cost))). at twilight at low ISO with low shutter speed does everything perfectly. To be honest, I now use Kitovsky 18-135 extremely rarely, only on the beach, so that I can "get" my wife and child from far away. On the crop, as a portrait, I can definitely recommend. As a standard lens, the angle may be narrow in the room, but in most cases it will do. In the presence of a Kit lens, on the crop (I won’t say about ff) this ABSOLUTE MUST HAVE !