The Sigma EX 15-30mm f3.5-4.5 DG Aspherical IF lens is a good quality, slight old-school ultrawide zoom lens for Nikon F mount. Old-school means that this lens still has a real aperture control ring, so it can be used on any F-mount Nikon camera made from the original F to the current day; the downside is that the AF system requires an in-body motor, so some newer cameras without a built-in motor (like the 3000 and 5000 series) wont be able to autofocus this lens. Optics are clean, with minor dust; cosmetic conditon is very good, with minor wear from normal use and handling. Includes front and rear caps.