The Nikon Nikkor T ED 500mm f/11 is a telephoto-design large format lens with a 210mm image circle. At 760g with a 67mm filter thread, the telephoto design is essential at this focal length, keeping the back focus manageable for standard field cameras. The ED glass reduces colour fringing. The f/11 maximum aperture results in a dim ground glass image, requiring careful focusing. It is a specialised lens for long-distance large format photography.