An excellent fix, I took it to replace the standard 18-55. Focus at first, too, upset me, like many. This is a lens feature that takes some getting used to. It is eliminated by the appropriate camera settings and with experience of use. The absence of a stub is not annoying, because. because of its aperture, it is used at low shutter speeds. Nikon D5100 Some pros: Aperture, I rarely turn on the flash, even in the dark. The weight. Price. Has some cons Bad tightness. After several months of use, I found dust on the lenses inside. It does not affect the quality of the pictures yet.