Lomography Neptune Convertible Art Lens System for Nikon F (Silver)

Inspired by Chevalier's original convertible lens system from the 1830s, this Nikon F-mount, silver Neptune Convertible Art Lens System from Lomography is a uniquely flexible lens set comprising three useful focal lengths. Compared to a traditional lens, this convertible system is made up of a lens base and then three swappable front lens cells that correspond to different focal lengths: 35mm f/3.5, 50mm f/2.8, and 80mm f/4. The lens base incorporates a focusing helicoid for precise manual focus control, and also has a built-in multi-scale diaphragm for exposure adjustment. In addition to the standard adjustable diaphragm, the lens base can also accommodate drop-in aperture plates for producing creatively-shaped bokeh effects.