The Nikon F- mount is a type of interchangeable lens mount developed by Nikon for its 35mm format single- lens reflex cameras. The F- mount was first introduced on the Nikon F camera in 1959, and features a three- lug bayonet mount with a 44 mm throat and a flange to focal plane distance of 46.
The company continues to use variations of the same lens mount specification for its film and. The Nikon Df is a full- frame F- mount DSLR FX format camera announced by Nikon on November 5,.
It uses dedicated mechanical controls similar to those used on mechanical 35mm film SLR camera and has an appearance similar to the Nikon FE and Nikon FM film cameras.