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Academy aperture
Named after the Academy of Motion Pictures Arts and Sciences, this is the standard size of the 35-mm aperture plate of film projectors and printers. It produces an aspect ratio (expressed as 1.33:1 ...
aspect ratio Quick reference
The Oxford Companion to Ships and the Sea (2 ed.)
usually refers to the ratio between the length of the luff and foot of a yacht's mainsail, but in some modern yachts may also refer to the ratio of the depth of a yacht's keel fin to its ...
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aspect-ratio conversion
In television post-production, ‘arcing’ typically involves cropping, ‘letterboxing’, or stretching the picture to accommodate different screen formats. Each process has advantages and disadvantages. ...
Bermudan rig
A sail plan, in which, unlike the gaff rig, a triangular-shaped mainsail is attached to a track on a single pole mast. The Bermudan rig, or leg o' mutton rig as it was initially sometimes called, was ...
cropping
1 The process of cutting off the edges of a picture, so as to select a part of the picture.2 The process of adding marks (crop marks) to a page to indicate where it is to be trimmed.
golden mean
A supposedly ideal visual proportion in composition and design in painting, architecture, sculpture, and photography. It is based on the ratio between two unequal parts of a whole where the ...
keel
1 The lowest and principal timber of a wooden ship, or the lowest continuous line of plates of a steel or iron ship, which extend the whole length of the vessel and to which the stem, sternpost, and ...
letterbox format
In film and television, horizontal masking of the screen area with black bars across the top and bottom of the picture. Letterboxing preserves the widescreen composition of feature films when they ...
mainsail
The principal sail of a sailing vessel. On a square-rigged vessel this is the lowermost (and largest) sail carried on the mainmast, and is usually termed the main course. The earliest known mainsails ...
pillarbox format
In film and television, vertical masking of the screen area with bars down the left and right hand sides of the picture. Pillarboxing is less common than letterboxing but may be used when 4 x 3 ...
widescreen
A general category of aspect ratios, initially encompassing a range of cinema formats but now including television, in which the horizontal axis is significantly longer than the 4 × 3 dimensions of ...
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