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"Is CHILDHOOD always the best time ?”
13 years ago
The illusions used in the film, television, and entertainment industries to simulate the imagined events in a story are traditionally called special effects (a.k.a. SFX or SPFX). In modern films, special effects are usually used to alter previously-filmed elements by adding, removing or enhancing objects within the scene. The use of special effects is more common in big-budget films, but affordable animation and compositing software enables even amateur filmmakers to create professional-looking effects.
Special effects are traditionally divided into the categories of optical effects and mechanical effects. In recent years, a greater distinction between special effects and visual effects has been recognized, with "visual effects" referring to post-production and optical effects, and "special effects" referring to on-set mechanical effects.
Optical effects (also called visual or photographic effects), are techniques in which images or film frames are created and manipulated for film and video. Optical effects are produced photographically, either "in-camera" using multiple exposure, mattes, or the Schüfftan process, or in post-production processes using an optical printer or video editing software. An optical effect might be used to place actors or sets against a different background, or make an animal appear to talk.
Mechanical effects (also called practical or physical effects), are usually accomplished during the live-action shooting. This includes the use of mechanized props, scenery and scale models, and pyrotechnics. Making a car appear to drive by itself, or blowing up a building are examples of mechanical effects. Mechanical effects are often incorporated into set design and makeup. For example, a set may be built with break-away doors or walls, or makeup can be used to make an actor look like a monster.
Since the 1990s, computer generated imagery (CGI) has come to the forefront of special effects technologies. CGI gives film-makers greater control, and allows many effects to be accomplished more safely and convincingly. As a result, many optical and mechanical effects techniques have been superseded by CGI.
Special effects are traditionally divided into the categories of optical effects and mechanical effects. In recent years, a greater distinction between special effects and visual effects has been recognized, with "visual effects" referring to post-production and optical effects, and "special effects" referring to on-set mechanical effects.
Optical effects (also called visual or photographic effects), are techniques in which images or film frames are created and manipulated for film and video. Optical effects are produced photographically, either "in-camera" using multiple exposure, mattes, or the Schüfftan process, or in post-production processes using an optical printer or video editing software. An optical effect might be used to place actors or sets against a different background, or make an animal appear to talk.
Mechanical effects (also called practical or physical effects), are usually accomplished during the live-action shooting. This includes the use of mechanized props, scenery and scale models, and pyrotechnics. Making a car appear to drive by itself, or blowing up a building are examples of mechanical effects. Mechanical effects are often incorporated into set design and makeup. For example, a set may be built with break-away doors or walls, or makeup can be used to make an actor look like a monster.
Since the 1990s, computer generated imagery (CGI) has come to the forefront of special effects technologies. CGI gives film-makers greater control, and allows many effects to be accomplished more safely and convincingly. As a result, many optical and mechanical effects techniques have been superseded by CGI.
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