![]() The F-mount has a significant degree of both backward and forward compatibility. Numerous other manufacturers employ the F-mount in non-photographic imaging applications. F-mount cameras include current models from Nikon, Fujifilm, Sinar, JVC, Kenko and Horseman. In addition to Nikon's own range of " Nikkor" lenses, brands of F-mount photographic lenses include Zeiss, Voigtländer, Schneider, Angénieux, Samyang, Sigma, Tokina, Tamron, Hartblei, Kiev-Arsenal, Lensbaby, and Vivitar. The F-mount has been in production for over 60 years, the only SLR lens mount with such longevity. The F-mount is also popular in scientific and industrial applications, most notably machine vision. ![]() Over 400 different Nikkor lenses are compatible with the system. The large variety of F-mount compatible lenses makes it the largest system of interchangeable flange-mount photographic lenses in history. The Nikon F-mount is one of only two SLR lens mounts (the other being the Pentax K-mount) which were not abandoned by their associated manufacturer upon the introduction of autofocus, but rather extended to meet new requirements related to metering, autofocus, and aperture control. The company continues, with the 2020 D6 model, to use variations of the same lens mount specification for its film and digital SLR 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 46.5 mm. The Nikon F-mount is a type of interchangeable lens mount developed by Nikon for its 35mm format single-lens reflex cameras. The Nikon F of 1959 embodies the original F-mount.
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