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The higher the twilight factor, mathematically, the better the resolution of the binoculars when observing under dim light conditions. Mathematically, 7×50 binoculars have exactly the same twilight factor as 70×5 ones, but 70×5 binoculars are useless during twilight and also in well-lit conditions as they would offer only a 0.14 mm exit pupil.
The sequence of lens designations may differ in literature. See also full list of Nikon designations, Sigma designations, Tamron designations and Tokina designations.. Nikon AF-S/Sigma HSM/Tamron USD or PZD: The lens contains an integrated ultrasonic focus motor based on piezoelectricity, which enables quiet or low noise autofocus operation.
The Nikon Corporation was established on 25 July 1917 when three leading optical manufacturers merged to form a comprehensive, fully integrated optical company known as Nippon Kōgaku Tōkyō K.K.
Nikon announced the lens on 22 July 2003. [2] It was the first prime lens released by Nikon specifically designed for Nikon DX format DSLR cameras. The lens produces a distinctive rectangular fisheye image, which fills the DX format frame (as opposed to a circular fisheye lens which produces a circular image).
The FA can also utilize the Nikon MD-12 motor drive of the Nikon FM and Nikon FE series, but the unit will not provide power for the FA. The Nikon FA was a mostly metal, heavily computerized version of the Nikon FE2. The FA was a battery-powered (two SR44 or LR44, or one 1/3N) electromechanically (much electronics, but many springs, gears and ...
The Nikon F5 is a professional 35 mm film-based single-lens reflex camera body manufactured by Nikon from 1996 through 2004. It was the fifth in Nikon's professional film camera line, which began in 1959 with the Nikon F. It followed the Nikon F4 of 1988, which introduced in-body autofocus to Nikon's professional line.