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Encyclopedia > Normal lens

In photography and cinematography a normal lens is a lens that generates images that are generally held to have a "natural" perspective similar to human eyesight, compared with lenses with longer or shorter focal lengths. Photography is the process of making pictures by means of capturing light on a light-sensitive medium, such as a sensor or film. ... Cinematography [Greek: kine (movement) and graphos (writing)], is the discipline of making lighting and camera choices when recording photographic images for the cinema. ... Photographic lens One of Canons most popular wide angle lenses - 17-40 f/4 L The zoom lens of the Canon Elph A photographic lens (or more correctly, objective) is an optical lens or assembly of lenses used in conjunction with a camera body and mechanism to make images...


Lenses of shorter focal length are called wide-angle lenses, while longer focal length lenses are called telephoto lenses. One of Canons most popular wide-angle lenses - 17-40 mm f/4 L retrofocus zoom lens. ... In photography and cinematography, a telephoto lens is a lens whose focal length is significantly longer than the focal length of a normal lens. ...


In still photography, a normal lens is a lens whose focal length is roughly equivalent to the diagonal of the image projected within the camera. Photography is the process of making pictures by means of capturing light on a light-sensitive medium, such as a sensor or film. ... Photographic lens One of Canons most popular wide angle lenses - 17-40 f/4 L The zoom lens of the Canon Elph A photographic lens (or more correctly, objective) is an optical lens or assembly of lenses used in conjunction with a camera body and mechanism to make images... The focal point F and focal length f of a positive lens, a negative lens, a concave mirror, and a convex mirror. ...

  • Standard normal lenses for various film formats for photography are:
Film format Image dimensions Image diagonal Normal lens focal length
APS C 16.7 × 25.1 mm 30.15 mm 28 mm, 35 mm
135 24 × 36 mm 43.27 mm 50 mm, 45 mm
120/220, 6 × 4.5 (645) 56 × 45 mm 71.84 mm 75 mm
120/220, 6 × 6 56 × 56 mm 79.20 mm 80 mm
120/220, 6 × 7 56 × 68 mm 88.09 mm 90 mm
120/220, 6 × 9 56 × 84 mm 100.96 mm 105 mm
large format 4 × 5 sheet film 101.6 × 127 mm (4 × 5") 162.64 mm 150 mm
large format 8 × 10 sheet film 203.2 × 254 mm (8 × 10") 325.27 mm 355 mm (14")

For a 35 mm camera with a diagonal of 43 mm, the most commonly used normal lens is 50 mm, but focal lengths between about 40 and 58 mm are also considered normal. // Movie film formats Amateur formats: 8 mm Single-8 Super 8 mm Polavision 9,5 mm film 17. ... An Advanced Photo System (IX240) film cartridge Advanced Photo System (APS) is a film format for still photography. ... 135 Film Size, Kodak Tri-X 400 speed 135 (ISO 1007) is a film format for still photography. ... 120 is a film format for still photography introduced by Kodak for their Brownie No. ... 120 is a film format for still photography introduced by Kodak for their Brownie No. ... 120 is a film format for still photography introduced by Kodak for their Brownie No. ... 120 is a film format for still photography introduced by Kodak for their Brownie No. ... Large format describes photographic films, view cameras (including pinhole cameras) and processes that use a film or digital sensor the size of 4 x 5 inches or larger. ... Sheet film is large format photographic film supplied on individual sheets of acetate or polyester film base rather than rolls. ... Large format describes photographic films, view cameras (including pinhole cameras) and processes that use a film or digital sensor the size of 4 x 5 inches or larger. ... Sheet film is large format photographic film supplied on individual sheets of acetate or polyester film base rather than rolls. ... 135 Film Size, Kodak Tri-X 400 speed 135 (ISO 1007) is a film format for still photography. ... Large format camera lens. ...


The 50 mm focal length was chosen by Oskar Barnack, the creator of the Leica camera, as a compromise between the theoretical value and good sharpness, as lens technology at the time was such that slightly longer focal lengths were able to achieve optimum sharpness. Oskar Barnack (November 1, 1879 – January 16, 1936) was a German precision mechanic. ... Image:Leica-Logo. ... In photography, acutance is used to describe the edge contrast of an image. ... A lens. ...

  • In Digital photography the situation is more complex. The sensor type diameter is not the sensor diameter:
(*) refers to tv-tube diameters that were standards in the 50's. The normal lens focal length is roughly 2/3 of the TV tube diameter.
(**) this is a mathematical calculation because most of the cameras are equipped with zoom lenses.
Sensor type TV-tube diameter * Image dimensions Image diagonal Normal lens focal length **
1/3.6" 7.1 mm 4.00 x 3.00 mm 5.00 mm 5 mm
1/3.2" 7.9 mm 4.54 x 3.42 mm 5.68 mm 5.7 mm
1/3" 8.5 mm 4.80 x 3.60 mm 6.00 mm 6 mm
1/2.7" 9.4 mm 5.37 x 4.04 mm 6.72 mm 6.7 mm
1/2.5" 10.2 mm 5.76 x 4.29 mm 7.2 mm 7 mm
1/2" 12.7 mm 6.40 x 4.80 mm 8.00 mm 8 mm
1/1.8" 14.1 mm 7.18 x 5.32 mm 8.93 mm 9 mm
1/1.7" 14.9 mm 7.60 x 5.70 mm 9.50 mm 9.5 mm
1/1.6" 15.9 mm 10.5 mm
2/3" 16.9 mm 8.80 x 6.60 mm 11.00 mm 11 mm
1" 25.4 mm 12.80 x 9.60 mm 16.00 mm 16 mm
4/3" 33.9 mm 18.00 x 13.50 mm 22.50 mm 23 mm
(APS-C) 1/8" 45.7 mm 22.70 x 15.10 mm 27.3 mm 27 mm
DX n/a 23.7 x 15.8 28.40 mm 28 mm
FF (35 mm film) n/a 36 x 24 mm 43.30 mm 50 mm
(4 x 5 cm) n/a 49.0 x 36.7 mm 61.22 mm
Film format Image dimensions Image diagonal Normal lens focal length
N-8 3.68 x 4.88 mm 6.11 mm 12 - 15 mm
Single - 8 (FUJI) 4.22 x 6.24 mm 7.53 mm 15 - 17 mm
Super - 8 4.22 x 6.24 mm 7.53 mm 15 - 17 mm
9.5 mm 6.5 x 8.5 mm 10.70 mm 20 mm
16 mm, magnetical sound 7.49 x 10.26 mm 12.70 mm 25 mm
16 mm, optical sound
35 mm 18.00 x 24.00 mm 30.00 mm 60 mm
35 mm, sound 16.03 x 22.05 mm 40.53 mm
65 mm
70 mm 52.6 x 23.0 mm 57.41 mm

See also: angle of view, photographic lens. 10 MP Nikon D200 and a Nikon film scanner The Canon EOS 350D The Canon PowerShot A95 Digital photography, as opposed to film photography, uses electronic devices to record and capture the image as binary data. ... A full frame digital SLR is a digital SLR camera built for a pre-existing range of photographic lenses that takes full advantage of the image circle of those lenses by having an imager that is the full size of the film frame the lenses were designed to cover. ... Cinematography [Greek: kine (movement) and graphos (writing)], is the discipline of making lighting and camera choices when recording photographic images for the cinema. ... The focal point F and focal length f of a positive lens, a negative lens, a concave mirror, and a convex mirror. ... Large format camera lens. ... 8mm film is a motion picture film format in which the filmstrip is eight millimeters wide. ... 8 mm may refer to: 8 mm film, or its replacement N - 8, Super - 8 mm film and Single 8 - mm film The film 8mm about a private detective trying to verify the authenticiy of a snuff movie. ... Kodachrome 40 KMA464P Super 8 Catridge Super 8 mm film, also called Super 8 is a motion picture film format that was developed in the 1960s and released on the market in 1965 by Eastman Kodak as an improvement of the older 8mm home movie format, and the Cine 8... Three frames of 9. ... 16 mm film was introduced by Eastman Kodak in 1923 as an inexpensive amateur alternative to the conventional 35 mm film format. ... 35 mm film frames. ... 35 mm film frames. ... 70 mm film (or 65 mm film) is a high-resolution motion picture film format. ... 70 mm film (or 65 mm film) is a high-resolution film stock, of superior quality to standard 35 mm motion picture film format. ... A cameras angle of view can be measured horizontally, vertically, or diagonally. ... Photographic lens One of Canons most popular wide angle lenses - 17-40 f/4 L The zoom lens of the Canon Elph A photographic lens (or more correctly, objective) is an optical lens or assembly of lenses used in conjunction with a camera body and mechanism to make images...


  Results from FactBites:
 
DSLR Lens 101 (5957 words)
A normal lens renders front to back spacing between objects such that depth perception appears to be the same as that observed by the unaided human eye.
The focal length of a lens is determined primarily by the curvature of its surfaces.
The greater the curvature, the thicker the lens, and the shorter the focal length is.
  More results at FactBites »

 
 

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