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In filmmaking a practical effect is a special effect produced physically, without computer-generated imagery or other post-production techniques. In some contexts, "special effect" is used as a synonym of "practical effect", in contrast to "visual effects" which are created in post-production through photographic manipulation or computer generation.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>
Practical effects often use principles from magic tricks, exploiting the camera's single viewpoint to create convincing illusions that may work only from certain angles, or using specially created props designed to achieve the desired effect. These effects require an interdisciplinary skill set, combining artistic craftsmanship with technical expertise in mechanics and engineering to achieve the desired result.
Many of the staples of action movies are practical effects. Gunfire, bullet wounds, rain, wind, fire, and explosions can all be produced on a movie set by someone skilled in practical effects. Non-human characters and creatures produced with make-up, prosthetics, masks, and Template:Nowrapin contrast to computer-generated Template:Nowrapare also examples of practical effects.
Practical effect techniquesEdit
- The use of prosthetic makeup, animatronics, puppetry, or creature suits to create the appearance of living creatures.
- Miniature effects, which is the use of scale models which are photographed in a way that they appear full sized.
- Mechanical effects, such as aerial rigging to simulate flight, stage mounted gimbals to make the ground move, or other mechanical devices to physically manipulate the environment.
- Pyrotechnics for the appearance of fire and explosions.
- Weather effects such as sprinkler systems to create rain, fog machines to create smoke, and fake snow.
- Body mutilation effects such as bullet hit squibs to create the illusion of gunshot wounds and fake blood.