FILM & TV GLOSSARY
UKFILMNET FILM & TELEVISION PRODUCTION GLOSSARY
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drawing power | ||
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The concept of the drawing power of the lens is a lesser-known and somewhat specialist term used in photography and cinematography. At its simplest, the drawing power of the lens relates to how rapidly an object's furthest components fall away to the vanishing point of a shot, compared to those nearest. It relates to how angler the perspective of a shot it. If you think about a shot featuring a skyscraper, a lens with high drawing power would show quickly tapering tops of the sky scrapers, as the higher floors are further away. Thus typically wider angle lenses (those with a shorter focal length) have a greater drawing power than normal focal length or long (telephoto) lenses. | ||
scrim | |||
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Sample Scrims
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aperture | ||
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The aperture is the term used to describe the size of the hole in the front of the camera that permits light to enter and fall on the film (or the electronic image sensor) that is collecting the light. The device that controls the size of the aperture is known as the iris. Hence the setting that measures the iris 'hole' size is known as the aperture. Aperture is measured in f-stops and these range from f1.4 (fully open) through f2.0, f2.8, f4, f5., f8, f11 and f16, right up to f22 (fully closed). I.e. the larger the f-stop number the smaller the aperture size-the smaller the size of the hole permitting light into the camera. f1 .4 permits twice as much light as f2.0 and f2 .0 permits twice as much lighting as f2 .8. ![]() | ||
lighting practicals | ||
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Lighting practicals are a collective term for any single or number of lights that can seen by an audience within shot and which (usually but not always) originate light that is used in the final scene. Examples of lighting practicals include bed side table lamps, candles, desk lamps, torches (flash lights) and indeed any form of lighting where it is evidence to the audience that the light might naturally be expected to come from such light sources. | ||