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A collection of lenses a DSLR owner might have: 50mm F1.4, 17-40mm F4, 100mm F2.8 Macro, 24-70mm F2.8, 70-200mm F2.8. This article details lenses for single-lens reflex and digital single-lens reflex cameras (SLRs and DSLRs respectively).
Compared to most fixed-lens compact cameras, the most commonly used and inexpensive SLR lenses offer a wider aperture range and larger maximum aperture (typically f /1.4 to f /1.8 for a 50 mm lens). This allows photographs to be taken in lower light conditions without flash, and allows a narrower depth of field, which is useful for blurring the ...
A digital single-lens reflex camera (digital SLR or DSLR) is a digital camera that combines the optics and mechanisms of a single-lens reflex camera with a solid-state image sensor and digitally records the images from the sensor. The reflex design scheme is the primary difference between a DSLR and other digital cameras.
SLR: Single-lens reflex camera. A camera where the same lens is used to view the scene and to focus its image onto a film emulsion or solid-state photosensor. Usually combined with the facility to fit one of a range of lenses, and often more versatile than viewfinder/rangefinder cameras. [11] SOOC: Straight out of camera. Images as shot out of ...
[366] [367] The Canon FD 55mm f/1.2 AL (Japan) of 1971 was the first rectilinear aspheric SLR lens; for FD mount Canon SLRs, [368] [369] and the Asahi SMC Takumar 15mm f/3.5 (Japan/West Germany) of 1975 was the first rectilinear aspheric wide angle SLR lens; for M42 screw mount Asahi Pentax SLRs [370] (co-designed with Carl Zeiss [Oberkochen ...
Other lenses for the Contax included the Biotar, Biogon, Orthometar, and various Tessars and Triotars. The last important Zeiss innovation before the Second World War was the technique of applying anti-reflective coating to lens surfaces invented by Olexander Smakula in 1935. [8] A lens so treated was marked with a red "T", short for "Transparent".
It features a comparably short flange focal distance of 40.50 mm for a 35 mm film SLR camera. Its diameter is 47 mm. [3] The focal range of Konica Hexanon lenses went from 21mm to 1000mm; at the start one zoom 47-100mm f3.5 Hexanon AR-H was offered. [4] [5] The Konica AR mount SLR system was discontinued in late 1988.
The earliest lenses had pre-set and manual aperture controls. Lens engraving included "Rokkor" branding, basic construction details, maximum aperture (1:nnn), and focal length (f=nn mm). AR (I) 1958 – 1960 These were contemporaneous with the SR lenses, and had automatic diaphragm, as designated by the engraved "Auto Rokkor" (AR) name. AR (II)
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