For the photographer who specializes in portraits and still life, the 105 mm Nikon DC-Nikkor is an ideal choice for a DC lens (defocus lens). Because this is a DC lens, the Nikon DC-Nikkor allows the photographer to choose how much emphasis the background or the foreground of a photo should have. This gives the photographer the ability to control which area in a photo should have a blurred effect. Blurring images is way to make elements in a photo appear softer or coarser. This feature is in addition to the potential that is already contained in an f/2.0 aperture lens such as the Nikon DC-Nikkor. Such creative control often lends itself well to both still life and portraits, though all forms of photography can benefit from the features of this Nikon lens. Built of rugged metal and plastic materials, the Nikon lens uses an independent ring in order to change between manual focusing and automatic focusing.