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The only GN lens, the supercompact GN Auto Nikkor (it was the second smallest Nikon F-mount lens ever made), was built during the late 1960s and early 1970s. An updated variant with a lens hood was made through the 1990s alongside the FM3a. HRI — High Refractive Index elements. Contains elements with a refractive index >2.
In photography, a lens hood or lens shade is a device used on the front end of a lens to block the Sun or other light source(s) to prevent glare and lens flare. [1] Lens hoods may also be used to protect the lens from scratches and the elements without having to put on a lens cover .
One permitted the lens to turn on the camera's metering and focus sensors, two focused the lens (towards and away from infinity) and two appear to have been unused and may have been reserved for future functionality. The K F-mount was largely a failure. Only one camera and one lens ever used this mount, the Pentax ME F and SMC Pentax-AF 35-70/2 ...
Lens caps or covers are often lost, they are not a high value item among photographers, especially professionals, photographers at large events or in large crowds may drop their lens caps and fail to retrieve them, leading to a litter of lens caps. [citation needed] A lens cap may be tethered to the camera via a string to avoid losing it.
Canon EF 24–70mm f/2.8L lens with hood (EW-83F) The Canon EF 24–70mm lens is a family of professional EF mount wide -to- normal zoom lenses manufactured and sold by Canon . The first of the family, the EF 24–70mm f/2.8L , was introduced in 2002 to replace the well-regarded 28–70mm f/2.8L .
Two years earlier, the lens had been introduced as a one-touch zoom in the manual-focus Minolta SR mount (as a "plain" MD lens). However, production slowed and then eventually stopped for both the AF and MD versions; its successors, the 70-210mm f / 3.5-4.5 and 70-210mm f / 4.5-5.6 had none of the qualities of the original and build and image ...
Front and rear views of a Canon EF50mm f/1.4 USM. The EF 50mm lenses are a group of normal prime lenses made by Canon that share the same focal length.These lenses are based on the classic double-Gauss lens, [1] with the f/1.8 being a standard six-element double-Gauss with an air gap and powers between element 2 and 3 [1] and its faster cousins adding additional elements. [2]
Cambo lens board with Copal #1. A lens board or lensboard is a photographic part used for securing a lens to the front standard of a large format view camera. [1] The lens board itself is usually flat, square, and made of metal (most commonly aluminum), wood, or plastic. The lens board will have a hole of various diameters drilled dead center ...
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