Nikon 24-85mm f2.8-4D IF is an Auto Focus (AF) Standard Zoom lens with 35mm FF max sensor coverage. When mounted on a 35mm FF sensor camera, it will give you an FF equivalent focal range of 24 - 85mm. With a max aperture of f2.8, this lens is fast on wide end. The long end is also quite fast at f4.
Nikon 24-85mm f2.8-4D IF is not a weather sealed lens, so you have to be extra careful against rain and dust.