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Variant used commonly for portable DVD players, digital photo frames, GPS receivers and devices such as the Kenwood DNX-5120 and Glospace SGK-70; often marketed as "16:9" 480: ×: 234 80∶39: 16∶9: 0.866 112,320: qSVGA Quarter SVGA: Super Nintendo Entertainment System Selectable in some PC shooters: 400: ×: 300 4∶3: 4∶3: 1∶1: 120,000 ...
In motion picture formats, the physical size of the film area between the sprocket perforations determines the image's size. The universal standard (established by William Dickson and Thomas Edison in 1892) is a frame that is four perforations high. The film itself is 35 mm wide (1.38 in), but the area between the perforations is 24.89 mm × 18 ...
On 2D displays, such as computer monitors and TVs, display size or viewable image size (VIS) refers to the physical size of the area where pictures and videos are displayed. The size of a screen is usually described by the length of its diagonal , which is the distance between opposite corners, typically measured in inches.
35 mm equivalent focal lengths are calculated by multiplying the actual focal length of the lens by the crop factor of the sensor. Typical crop factors are 1.26× – 1.29× for Canon (1.35× for Sigma "H") APS-H format, 1.5× for Nikon APS-C ("DX") format (also used by Sony, Pentax, Fuji, Samsung and others), 1.6× for Canon APS-C format, 2× for Micro Four Thirds format, 2.7× for 1-inch ...
Because the image sensors in many digital cameras are smaller than the 24 mm × 36 mm image area of full-frame 35 mm cameras, a lens of a given focal length gives a narrower field of view in such cameras. Sensor size is often expressed as optical format in inches. Other measures are also used; see table of sensor formats and sizes below.
The usual frame size of 35mm still cameras is 24×36 mm, however half-frame cameras typical use an image area of 18×24 mm. One net result of this is that a roll of film can typically contain twice the number of exposures as in a full frame 35mm camera (that is, a roll that is nominally 36 exposures allows 72 in the half-frame format).
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