Bright f/1.8 aperture Manual aperture ring Manual focus override The Nikon 50mm f/1.8 AF Nikkor is a compact, light prime lens suitable for low light, architecture or portraiture images. The lens is an affordable option for the newcomer with a Nikon D90 or similar, being a perfect companion for a lighter DSLR. A number of more recent versions of the lens are available, with the direct replacement being the D version, which is virtually identical but more expensive. The light, compact build of the lens makes taking candid images simple, especially as the bright aperture makes the focus rapid enough to work in most lighting conditions and the manual aperture ring provides an alternative control method to the camera body. For those looking for an introduction to wide-aperture prime lens photography this lens is a great place to start.