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1. 3:1 = 4:3 = 12:9 35 mm original silent film ratio, today commonly known in TV and video as 1.33:1. Also standard ratio for MPEG-2 video compression. This format is still used in many personal video cameras today and has influenced the selection or design of other aspect ratios. It is the standard Super 35 mm ratio. 1.37:1 ~ 48:35
V-Lite 1.3× (2008) - The V-Lite series with a 1.3x squeeze factor, enabling the use of nearly the entire image area of 3-perf 35 mm film or the sensor area of a 16:9 digital camera to provide the 2.39:1 release format. V-Lite 16 (2008) - Lenses for 16 mm anamorphic production, in both 1.3x (for Super 16 mm) and 2x (for standard 16 mm).
This compares to the 0.866" by 0.732" (approx. 22 mm x 18.6 mm) frame of a modern anamorphic 35 mm negative, which provides a frame area of 0.64 sq. inch. On the print film, however, there was a smaller frame size of approximately 1.34" x 1.06" (34 mm x 27 mm) to allow space for the 6 magnetic soundtracks.
The 64:27 aspect ratio of "21:9" is an extension of the existing video aspect ratios 4:3 (SDTV) and 16:9 (HDTV), as it is the third power of 4:3, where 16:9 of traditional HDTV is 4:3 squared. This allows electronic scalers and optical anamorphic lenses to use an easily implementable 4:3 (1. 3:1) scaling factor.
As an example, 8:5, 16:10, 1.6:1, 8 ⁄ 5 and 1.6 are all ways of representing the same aspect ratio. In objects of more than two dimensions, such as hyperrectangles , the aspect ratio can still be defined as the ratio of the longest side to the shortest side.
When composing for 1.85:1, it is known as Super 1.85, since it was larger than standard 1.85. When composing for 2.39:1, there are two methods most frequently used: common center, which keeps the 2.39 extraction area at the center of the film, and common top, which shifts the 2.39 extraction area upwards on the film so that it shares a common top line with a centered 1.85:1 frame.
Techniscope's 2.33:1 aspect ratio is easily enlarged to the 2.39:1 widescreen ratio, [2] because it uses half the amount of 35 mm film stock and standard spherical lenses. Thus, Techniscope release prints are made by anamorphosing , enlarging each frame vertically by a factor of two.
This chart shows the most common display resolutions, with the color of each resolution type indicating the display ratio (e.g., red indicates a 4:3 ratio).