The 500mm f/8.0 Telephoto Lens for T-mount fromVivitar is an ultra-telephoto lens that brings distant objects close and is ideal for wildlife photography. It is also used for landscapes, cityscapes, architecture, sports and celestial photography and multiple general photography applications. The lens' multi-coating process provides even light transmission and minimizes flaring to produce sharp, high contrast images. A built-in rotatable tripod collar provides vibration-free stability when used with a tripod or monopod. This lens requires a T-mount adapter to attach to a camera body, but can be compatible with virtually all film or digital SLR cameras.