Special effect
Encyclopedia
The illusions used in the film
Film
A film, also called a movie or motion picture, is a series of still or moving images. It is produced by recording photographic images with cameras, or by creating images using animation techniques or visual effects...

, television
Television
Television is a telecommunication medium for transmitting and receiving moving images that can be monochrome or colored, with accompanying sound...

, theatre
Theatre
Theatre is a collaborative form of fine art that uses live performers to present the experience of a real or imagined event before a live audience in a specific place. The performers may communicate this experience to the audience through combinations of gesture, speech, song, music or dance...

, or entertainment
Entertainment
Entertainment consists of any activity which provides a diversion or permits people to amuse themselves in their leisure time. Entertainment is generally passive, such as watching opera or a movie. Active forms of amusement, such as sports, are more often considered to be recreation...

 industries to simulate the imagined events in a story are traditionally called special effects (often abbreviated as SFX, SPFX, or simply FX).

Special effects are traditionally divided into the categories of optical effects and mechanical effects. With the emergence of digital film-making tools a greater distinction between special effects and visual effects
Visual effects
Visual effects are the various processes by which imagery is created and/or manipulated outside the context of a live action shoot. Visual effects involve the integration of live-action footage and generated imagery to create environments which look realistic, but would be dangerous, costly, or...

 has been recognized, with "visual effects" referring to digital post-production and "special effects" referring to on-set mechanical effects and in-camera optical effects.

Optical effects (also called photographic effects), are techniques in which images or film frames are created photographically, either "in-camera" using multiple exposure
Multiple exposure
In photography, a multiple exposure is the superimposition of two or more individual exposures to create a single photograph. The exposure values may or may not be identical to each other.-Overview:...

, mattes
Matte (filmmaking)
Mattes are used in photography and special effects filmmaking to combine two or more image elements into a single, final image. Usually, mattes are used to combine a foreground image with a background image . In this case, the matte is the background painting...

, or the Schüfftan process
Schüfftan process
The Schüfftan process is a movie special effect named after its inventor, Eugen Schüfftan . It was widely used in the first half of the 20th century before being almost completely replaced by the travelling matte and bluescreen effects....

, or in post-production processes using an optical printer
Optical printer
An optical printer is a device consisting of one or more film projectors mechanically linked to a movie camera. It allows filmmakers to re-photograph one or more strips of film...

. An optical effect might be used to place actors or sets against a different background.

Mechanical effects (also called practical or physical effects), are usually accomplished during the live-action shooting. This includes the use of mechanized props
Theatrical property
A theatrical property, commonly referred to as a prop, is an object used on stage by actors to further the plot or story line of a theatrical production. Smaller props are referred to as "hand props". Larger props may also be set decoration, such as a chair or table. The difference between a set...

, scenery, scale model
Scale model
A scale model is a physical model, a representation or copy of an object that is larger or smaller than the actual size of the object, which seeks to maintain the relative proportions of the physical size of the original object. Very often the scale model is used as a guide to making the object in...

s, pyrotechnics
Pyrotechnics
Pyrotechnics is the science of using materials capable of undergoing self-contained and self-sustained exothermic chemical reactions for the production of heat, light, gas, smoke and/or sound...

 and Atmospheric Effects: creating physical wind, rain, fog, snow, clouds etc. 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 to enhance a fight scene, or prosthetic makeup
Prosthetic makeup
Prosthetic makeup is the process of using prosthetic sculpting, molding and casting techniques to create advanced cosmetic effects...

 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 – and even, as technology marches on, at lower costs. As a result, many optical and mechanical effects techniques have been superseded by CGI.

Early development

In 1856, Oscar Rejlander
Oscar Gustave Rejlander
Oscar Gustave Rejlander was a pioneering Victorian art photographer and an expert in photomontage...

 created the world's first "trick photograph" by combining different sections of 32 negatives into a single image. In 1895, Alfred Clark created what is commonly accepted as the first-ever motion picture special effect. While filming a reenactment of the beheading of Mary, Queen of Scots, Clark instructed an actor to step up to the block in Mary's costume. As the executioner brought the axe above his head, Clarke stopped the camera, had all of the actors freeze, and had the person playing Mary step off the set. He placed a Mary dummy in the actor's place, restarted filming, and allowed the executioner to bring the axe down, severing the dummy's head. "Such… techniques would remain at the heart of special effects production for the next century."

This was not only the first use of trickery in the cinema, it was the first type of photographic trickery only possible in a motion picture, i.e. the "stop trick".

In 1896, French
France
The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

 magician Georges Méliès
Georges Méliès
Georges Méliès , full name Marie-Georges-Jean Méliès, was a French filmmaker famous for leading many technical and narrative developments in the earliest cinema. He was very innovative in the use of special effects...

 accidentally discovered the same "stop trick." According to Melies, his camera jammed while filming a street scene in Paris. When he screened the film, he found that the "stop trick" had caused a truck to turn into a hearse, pedestrians to change direction, and men turn into women. Melies, the stage manager at the Theatre Robert-Houdin, was inspired to develop a series of more than 500 short films, between 1914, in the process developing or inventing such techniques as multiple exposures
Double Exposure
Double exposure is a photographic technique in which two images are captured and combined into a single image.Double exposure may also refer to:* Double patterning, a technique for improving the resolution of patterning semiconductors...

, time-lapse
Time-lapse
Time-lapse photography is a cinematography technique whereby the frequency at which film frames are captured is much lower than that which will be used to play the sequence back. When replayed at normal speed, time appears to be moving faster and thus lapsing...

 photography, dissolve
Dissolve (film)
In the post-production process of film editing and video editing, a dissolve is a gradual transition from one image to another. The terms fade-out and fade-in and are used to describe a transition to and from a blank image. This is in contrast to a cut where there is no such transition. A dissolve...

s, and hand painted colour. Because of his ability to seemingly manipulate and transform reality with the cinematograph, the prolific Méliès is sometimes referred to as the "Cinemagician." His most famous film, Le Voyage dans la lune (1902), a whimsical parody of Jules Verne
Jules Verne
Jules Gabriel Verne was a French author who pioneered the science fiction genre. He is best known for his novels Twenty Thousand Leagues Under the Sea , A Journey to the Center of the Earth , and Around the World in Eighty Days...

's From the Earth to the Moon
From the Earth to the Moon
From the Earth to the Moon is a humorous science fantasy novel by Jules Verne and is one of the earliest entries in that genre. It tells the story of the president of a post-American Civil War gun club in Baltimore, his rival, a Philadelphia maker of armor, and a Frenchman, who build an enormous...

, featured a combination of live action and animation
Animation
Animation is the rapid display of a sequence of images of 2-D or 3-D artwork or model positions in order to create an illusion of movement. The effect is an optical illusion of motion due to the phenomenon of persistence of vision, and can be created and demonstrated in several ways...

, and also incorporated extensive miniature
Scale model
A scale model is a physical model, a representation or copy of an object that is larger or smaller than the actual size of the object, which seeks to maintain the relative proportions of the physical size of the original object. Very often the scale model is used as a guide to making the object in...

 and matte painting
Matte painting
A matte painting is a painted representation of a landscape, set, or distant location that allows filmmakers to create the illusion of an environment that would otherwise be too expensive or impossible to build or visit. Historically, matte painters and film technicians have used various techniques...

 work.

From 1910 to 1920, the main innovations in special effects were the improvements on the matte shot by Norman Dawn
Norman Dawn
Norman O. Dawn was an early film director. He made several improvements on the matte shot to apply it to motion picture, and was the first director to use rear projection in cinema....

. With the original matte shot, pieces of cardboard were placed to block the exposure of the film, which would be exposed later. Dawn combined this technique with the "glass shot." Rather than using cardboard to block certain areas of the film exposure, Dawn simply painted certain areas black to prevent any light from exposing the film. From the partially exposed film, a single frame is then projected onto an easel, where the matte is then drawn. By creating the matte from an image directly from the film, it became incredibly easy to paint an image with proper respect to scale and perspective (the main flaw of the glass shot). Dawn's technique became the textbook for matte shots due to the natural images it created.(Baker, 101-4

During the 1920s and 30s, special effects techniques were improved and refined by the motion picture industry. Many techniques - such as the Schüfftan process
Schüfftan process
The Schüfftan process is a movie special effect named after its inventor, Eugen Schüfftan . It was widely used in the first half of the 20th century before being almost completely replaced by the travelling matte and bluescreen effects....

 - were modifications of illusions from the theater (such as pepper's ghost
Pepper's ghost
Pepper's ghost is an illusionary technique used in theatre and in some magic tricks. Using a plate glass and special lighting techniques, it can make objects seem to appear or disappear, transparent, or make one object seem to morph into another...

) and still photography (such as double exposure and matte
Matte
Matte may refer to:In film:* Matte , filmmaking and video production technology* Matte painting, a process of creating sets used in film and video* Matte box, a camera accessory for controlling lens glare...

 compositing). Rear projection was a refinement of the use of painted backgrounds in the theater, substituting moving pictures to create moving backgrounds. Lifecasting of faces was imported from traditional maskmaking. Along with makeup advances, fantastic masks could be created which fit the actor perfectly. As material science advanced, horror film maskmaking followed closely.

Several techniques soon developed, such as the "stop trick", wholly original to motion pictures. Animation
Animation
Animation is the rapid display of a sequence of images of 2-D or 3-D artwork or model positions in order to create an illusion of movement. The effect is an optical illusion of motion due to the phenomenon of persistence of vision, and can be created and demonstrated in several ways...

, creating the illusion of motion, was accomplished with drawings (most notably by Winsor McCay
Winsor McCay
Winsor McCay was an American cartoonist and animator.A prolific artist, McCay's pioneering early animated films far outshone the work of his contemporaries, and set a standard followed by Walt Disney and others in later decades...

 in Gertie the Dinosaur
Gertie the Dinosaur
Gertie the Dinosaur is a 1914 American animated short film by Winsor McCay. Although not the first feature-length animated film, as is sometimes thought, it was the first cartoon to feature a character with an appealing personality...

) and with three-dimensional models (most notably by Willis O'Brien
Willis O'Brien
Willis Harold O'Brien was an Irish American pioneering motion picture special effects artist who perfected and specialized in stop-motion animation. He was affectionately known to his family and close friends as "Obie"....

 in The Lost World
The Lost World (1925 film)
The Lost World is a 1925 silent film adaptation of Arthur Conan Doyle's 1912 novel of the same name. The movie was produced by First National Pictures, a large Hollywood studio at the time, and stars Wallace Beery as Professor Challenger. This version was directed by Harry O...

and King Kong
King Kong (1933 film)
King Kong is a Pre-Code 1933 fantasy monster adventure film co-directed by Merian C. Cooper and Ernest B. Schoedsack, and written by Ruth Rose and James Ashmore Creelman after a story by Cooper and Edgar Wallace. The film tells of a gigantic island-dwelling apeman creature called Kong who dies in...

). Many studios established in-house "special effects" departments, which were responsible for nearly all optical and mechanical aspects of motion-picture trickery.

Also, the challenge of simulating spectacle in motion encouraged the development of the use of miniatures
Scale model
A scale model is a physical model, a representation or copy of an object that is larger or smaller than the actual size of the object, which seeks to maintain the relative proportions of the physical size of the original object. Very often the scale model is used as a guide to making the object in...

. Naval battles could be depicted with models in studio. Tanks and airplanes could be flown (and crashed) without risk of life and limb. Most impressively, miniatures and matte paintings could be used to depict worlds that never existed. Fritz Lang
Fritz Lang
Friedrich Christian Anton "Fritz" Lang was an Austrian-American filmmaker, screenwriter, and occasional film producer and actor. One of the best known émigrés from Germany's school of Expressionism, he was dubbed the "Master of Darkness" by the British Film Institute...

's film Metropolis
Metropolis (film)
Metropolis is a 1927 German expressionist film in the science-fiction genre directed by Fritz Lang. Produced in Germany during a stable period of the Weimar Republic, Metropolis is set in a futuristic urban dystopia and makes use of this context to explore the social crisis between workers and...

was an early special effects spectacular, with innovative use of miniatures, matte paintings, the Schüfftan process
Schüfftan process
The Schüfftan process is a movie special effect named after its inventor, Eugen Schüfftan . It was widely used in the first half of the 20th century before being almost completely replaced by the travelling matte and bluescreen effects....

, and complex compositing.

An important innovation in special-effects photography was the development of the optical printer
Optical printer
An optical printer is a device consisting of one or more film projectors mechanically linked to a movie camera. It allows filmmakers to re-photograph one or more strips of film...

. Essentially, an optical printer is a projector aiming into a camera lens, and it was developed to make copies of films for distribution. Until Linwood G. Dunn
Linwood G. Dunn
Linwood G. Dunn, A.S.C. was a pioneer of visual special effects in motion pictures and inventor of related technology...

 refined the design and use of the optical printer, effects shots were accomplished as in-camera effect
In-camera effect
An in-camera effect is any special effect in a video or movie that is created solely by using techniques in and on the camera and/or its parts. The in-camera effect is defined by the fact that the effect exists on the original camera negative or video recording before it is sent to a lab or modified...

s. Dunn demonstrating that it could be used to combine images in novel ways and create new illusions. One early showcase for Dunn was Orson Welles
Orson Welles
George Orson Welles , best known as Orson Welles, was an American film director, actor, theatre director, screenwriter, and producer, who worked extensively in film, theatre, television and radio...

' Citizen Kane
Citizen Kane
Citizen Kane is a 1941 American drama film, directed by and starring Orson Welles. Many critics consider it the greatest American film of all time, especially for its innovative cinematography, music and narrative structure. Citizen Kane was Welles' first feature film...

, where such locations as Xanadu
Xanadu (Citizen Kane)
Xanadu is the fictional estate of Charles Foster Kane, the title character of the film Citizen Kane. The estate gets its name from the real ancient Mongolian city, Xanadu, known for its splendor...

 (and some of Gregg Toland
Gregg Toland
Gregg Toland, A.S.C. was an American cinematographer noted for his innovative use of lighting and techniques such as deep focus, an example of which can be found in his work on Orson Welles' Citizen Kane.-Career:...

's famous 'deep focus
Deep focus
Deep focus is a photographic and cinematographic technique using a large depth of field. Depth of field is the front-to-back range of focus in an image — that is, how much of it appears sharp and clear. Consequently, in deep focus the foreground, middle-ground and background are all in focus...

' shots) were essentially created by Dunn's optical printer.

Colour era

The development of color photography required greater refinement of effects techniques. Colour enabled the development of such travelling matte techniques as bluescreen and the sodium vapor process
Sodium vapor process
The sodium vapor process is a technique for combining actors and background footage, allowed to be used by The Walt Disney Company as an alternative to the more common bluescreen process....

. Many films became landmarks in special-effects accomplishments: Forbidden Planet
Forbidden Planet
Forbidden Planet is a 1956 science fiction film directed by Fred M. Wilcox, with a screenplay by Cyril Hume. It stars Leslie Nielsen, Walter Pidgeon, and Anne Francis. The characters and its setting have been compared to those in William Shakespeare's The Tempest, and its plot contains certain...

used matte paintings, animation, and miniature work to create spectacular alien environments. In The Ten Commandments
The Ten Commandments (1956 film)
The Ten Commandments is a 1956 American epic film that dramatized the biblical story of the Exodus, in which the Hebrew-born Moses, an adopted Egyptian prince, becomes the deliverer of the Hebrew slaves. The film, released by Paramount Pictures in VistaVision on October 5, 1956, was directed by...

, Paramount's John P. Fulton
John P. Fulton
John P. Fulton, A.S.C. was an American special effects supervisor and cinematographer.-Biography:...

, A.S.C., multiplied the crowds of extras in the Exodus scenes with careful compositing, depicted the massive constructions of Rameses with models, and split the Red Sea
Red Sea
The Red Sea is a seawater inlet of the Indian Ocean, lying between Africa and Asia. The connection to the ocean is in the south through the Bab el Mandeb strait and the Gulf of Aden. In the north, there is the Sinai Peninsula, the Gulf of Aqaba, and the Gulf of Suez...

 in a still-impressive combination of travelling mattes and water tanks. Ray Harryhausen
Ray Harryhausen
Ray Harryhausen is an American film producer and special effects creator...

 extended the art of stop-motion animation with his special techniques of compositing to create spectacular fantasy adventures such as Jason and the Argonauts (whose climax, a sword battle with seven animated skeletons, is considered a landmark in special effects).

The Science Fiction Boom

Through the 1950s and 60s numerous new special effects were developed which would dramatically increase the level of realism achievable in science fiction films. The pioneering work of directors such as Pavel Klushantsev
Pavel Klushantsev
Pavel Vladimirovich Klushantsev was a Russian film director, producer, screenwriter and author who worked during the Soviet Era. A self-taught special effects engineer, far ahead of his time, Klushantsev devised many effects and techniques used by major motion pictures for decades to...

 would be used by major motion pictures for decades to come.

If one film could be said to have established a new high-bench mark for special effects, it would be 1968's 2001: A Space Odyssey
2001: A Space Odyssey (film)
2001: A Space Odyssey is a 1968 epic science fiction film produced and directed by Stanley Kubrick, and co-written by Kubrick and Arthur C. Clarke, partially inspired by Clarke's short story The Sentinel...

, directed by Stanley Kubrick
Stanley Kubrick
Stanley Kubrick was an American film director, writer, producer, and photographer who lived in England during most of the last four decades of his career...

, who assembled his own effects team (Douglas Trumbull
Douglas Trumbull
Douglas Huntley Trumbull is an American film director, special effects supervisor, and inventor. He contributed to, or was responsible for, the special photographic effects of 2001: A Space Odyssey, Close Encounters of the Third Kind, Star Trek: The Motion Picture, Blade Runner and The Tree of...

, Tom Howard, Con Pedersen and Wally Veevers) rather than use an in-house effects unit. In this film, the spaceship miniatures were highly detailed and carefully photographed for a realistic depth of field
Depth of field
In optics, particularly as it relates to film and photography, depth of field is the distance between the nearest and farthest objects in a scene that appear acceptably sharp in an image...

. The shots of spaceships were combined through hand-drawn rotoscope
Rotoscope
Rotoscoping is an animation technique in which animators trace over live-action film movement, frame by frame, for use in animated films. Originally, recorded live-action film images were projected onto a frosted glass panel and re-drawn by an animator...

s and careful motion-control work, ensuring that the elements were precisely combined in the camera – a surprising throwback to the silent era, but with spectacular results. Backgrounds of the African vistas in the "Dawn of Man" sequence were combined with soundstage photography via the then-new front projection technique. Scenes set in zero-gravity environments were staged with hidden wires, mirror shots, and large-scale rotating sets. The finale, a voyage through hallucinogenic scenery, was created by Douglas Trumbull
Douglas Trumbull
Douglas Huntley Trumbull is an American film director, special effects supervisor, and inventor. He contributed to, or was responsible for, the special photographic effects of 2001: A Space Odyssey, Close Encounters of the Third Kind, Star Trek: The Motion Picture, Blade Runner and The Tree of...

 using a new technique termed slit-scan.

The 1970s provided two profound changes in the special effects trade. The first was economic: during the industry's recession in the late 1960s and early 1970s, many studios closed down their in-house effects houses. Many technicians became freelancers or founded their own effects companies, sometimes specializing on particular techniques (opticals, animation, etc.).

The second was precipitated by the blockbuster success of two science fiction and fantasy films in 1977. George Lucas
George Lucas
George Walton Lucas, Jr. is an American film producer, screenwriter, and director, and entrepreneur. He is the founder, chairman and chief executive of Lucasfilm. He is best known as the creator of the space opera franchise Star Wars and the archaeologist-adventurer character Indiana Jones...

's Star Wars
Star Wars Episode IV: A New Hope
Star Wars Episode IV: A New Hope, originally released as Star Wars, is a 1977 American epic space opera film, written and directed by George Lucas. It is the first of six films released in the Star Wars saga: two subsequent films complete the original trilogy, while a prequel trilogy completes the...

ushered in an era of fantasy films with expensive and impressive special-effects. Effects supervisor John Dykstra, A.S.C. and crew developed many improvements in existing effects technology. They developed a computer-controlled camera rig called the "Dykstraflex" that allowed precise repeatability of camera motion, greatly facilitating travelling-matte compositing. Degradation of film images during compositing was minimized by other innovations: the Dykstraflex used VistaVision
VistaVision
VistaVision is a higher resolution, widescreen variant of the 35mm motion picture film format which was created by engineers at Paramount Pictures in 1954....

 cameras that photographed widescreen
Widescreen
Widescreen images are a variety of aspect ratios used in film, television and computer screens. In film, a widescreen film is any film image with a width-to-height aspect ratio greater than the standard 1.37:1 Academy aspect ratio provided by 35mm film....

 images horizontally along stock, using far more of the film per frame, and thinner-emulsion filmstocks were used in the compositing process. The effects crew assembled by Lucas and Dykstra was dubbed Industrial Light and Magic
Industrial Light and Magic
Industrial Light & Magic is an Academy Award-winning motion picture visual effects company that was founded in May 1975 by George Lucas and is owned by Lucasfilm. Lucas created the company when he discovered that the special effects department at 20th Century Fox was shut down after he was given...

, and since 1977 has spearheaded most effects innovations.

That same year, Steven Spielberg
Steven Spielberg
Steven Allan Spielberg KBE is an American film director, screenwriter, producer, video game designer, and studio entrepreneur. In a career of more than four decades, Spielberg's films have covered many themes and genres. Spielberg's early science-fiction and adventure films were seen as an...

's film Close Encounters of the Third Kind
Close Encounters of the Third Kind
Close Encounters of the Third Kind is a 1977 science fiction film written and directed by Steven Spielberg. The film stars Richard Dreyfuss, François Truffaut, Melinda Dillon, Teri Garr, Bob Balaban, and Cary Guffey...

boasted a finale with impressive special effects by 2001 veteran Douglas Trumbull
Douglas Trumbull
Douglas Huntley Trumbull is an American film director, special effects supervisor, and inventor. He contributed to, or was responsible for, the special photographic effects of 2001: A Space Odyssey, Close Encounters of the Third Kind, Star Trek: The Motion Picture, Blade Runner and The Tree of...

. In addition to developing his own motion-control system, Trumbull also developed techniques for creating intentional "lens flare
Lens flare
Lens flare is the light scattered in lens systems through generally unwanted image formation mechanisms, such as internal reflection and scattering from material inhomogeneities in the lens. These mechanisms differ from the intended image formation mechanism that depends on refraction of the image...

" (the shapes created by light reflecting in camera lenses) to provide the film's undefinable shapes of flying saucers.

The success of these films, and others since, has prompted massive studio investment in effects-heavy fantasy films. This has fuelled the establishment of many independent effects houses, a tremendous degree of refinement of existing techniques, and the development of new techniques such as CGI. It has also encouraged within the industry a greater distinction between special effects and visual effects
Visual effects
Visual effects are the various processes by which imagery is created and/or manipulated outside the context of a live action shoot. Visual effects involve the integration of live-action footage and generated imagery to create environments which look realistic, but would be dangerous, costly, or...

; the latter is used to characterize post-production and optical work, while special effects refers more often to on-set and mechanical effects.

Introduction of computer generated imagery (CGI)

A recent and profound innovation in special effects has been the development of computer generated imagery, or CGI which has changed nearly every aspect of motion picture special effects. Digital compositing allows far more control and creative freedom than optical compositing, and does not degrade the image like analogue (optical) processes. Digital imagery has enabled technicians to create detailed models, matte "paintings," and even fully realized characters with the malleability of computer software.

The most spectacular use of CGI has been the creation of photographically realistic images of fantasy creations. Images could be created in a computer using the techniques of animated cartoons or model animation. In 1993, stop-motion animators working on the realistic dinosaurs of Steven Spielberg
Steven Spielberg
Steven Allan Spielberg KBE is an American film director, screenwriter, producer, video game designer, and studio entrepreneur. In a career of more than four decades, Spielberg's films have covered many themes and genres. Spielberg's early science-fiction and adventure films were seen as an...

's Jurassic Park
Jurassic Park (film)
Jurassic Park is a 1993 American science fiction adventure film directed by Steven Spielberg. The film is based on the novel of the same name by Michael Crichton. It stars Sam Neill, Laura Dern, Jeff Goldblum, Richard Attenborough, Martin Ferrero, and Bob Peck...

were retrained in the use of computer input devices. By 1995, films such as Toy Story
Toy Story
Toy Story is a 1995 American computer-animated film released by Walt Disney Pictures. It is Pixar's first feature film as well as the first ever feature film to be made entirely with CGI. The film was directed by John Lasseter and featuring the voices of Tom Hanks and Tim Allen...

underscored that the distinction between live-action films and animated films was no longer clear. Other landmark examples include a character made up of broken pieces of a stained-glass window in Young Sherlock Holmes
Young Sherlock Holmes
Young Sherlock Holmes is a 1985 mystery/adventure film directed by Barry Levinson, produced by Steven Spielberg and written by Chris Columbus, based on characters by Sir Arthur Conan Doyle...

, a shapeshifting character in Willow
Willow (film)
Willow is a 1988 American fantasy film directed by Ron Howard and produced/co-written by George Lucas. Warwick Davis stars in the film, as well as Val Kilmer, Joanne Whalley, Jean Marsh, and Patricia Hayes...

, a tentacle of water in The Abyss
The Abyss
The Abyss is a 1989 science fiction film written and directed by James Cameron. It stars Ed Harris, Mary Elizabeth Mastrantonio, and Michael Biehn. The original musical score was composed by Alan Silvestri...

, the T-1000 Terminator in Terminator 2: Judgment Day
Terminator 2: Judgment Day
Terminator 2: Judgment Day is a 1991 science fiction action film directed by James Cameron and written by Cameron and William Wisher Jr.. It stars Arnold Schwarzenegger, Linda Hamilton, Robert Patrick, and Edward Furlong...

, hordes of armies of robots and fantastic creatures in the Star Wars prequel trilogy and The Lord of the Rings trilogy
The Lord of the Rings film trilogy
The Lord of the Rings is an epic film trilogy consisting of three fantasy adventure films based on the three-volume book of the same name by English author J. R. R. Tolkien. The films are The Fellowship of the Ring , The Two Towers and The Return of the King .The films were directed by Peter...

 and the planet Pandora in Avatar.

Planning and use

Although most special effects work is completed during post-production
Post-production
Post-production is part of filmmaking and the video production process. It occurs in the making of motion pictures, television programs, radio programs, advertising, audio recordings, photography, and digital art...

, it must be carefully planned and choreographed in pre-production
Pre-production
Pre-production or In Production is the process of preparing all the elements involved in a film, play, or other performance.- In film :...

 and production. A Visual effects supervisor
Visual effects supervisor
In the context of film and television production, a visual effects supervisor is responsible for achieving the creative aims of the director and/or producers through the use of visual effects...

 is usually involved with the production from an early stage to work closely with the Director and all related personnel to achieve the desired effects.

Live special effects

Live special effects are effects that are used in front of a live audience, mostly during sporting events, concerts and corporate shows. Types of effects that are commonly used include: flying effects, laser lighting
Laser lighting display
A laser lighting display or laser light show involves the use of laser light to entertain an audience. A laser light show may consist only of projected laser beams set to music, or may accompany another form of entertainment, typically a dance concert or other musical performance.Laser light is...

, Theatrical smoke and fog
Theatrical smoke and fog
Theatrical smoke and fog, also known as special effect smoke, fog or haze, is a category of atmospheric effects used in the entertainment industry. The use of fog can be found throughout motion picture and television productions, live theatre, concerts, at nightclubs and raves, amusement and theme...

, CO2 effects, pyrotechnics
Pyrotechnics
Pyrotechnics is the science of using materials capable of undergoing self-contained and self-sustained exothermic chemical reactions for the production of heat, light, gas, smoke and/or sound...

, confetti
Confetti
Confetti is a multitude of pieces of paper, mylar or metallic material which is usually thrown at parades and celebrations, especially weddings . Confetti is made in a variety of colors, and commercially available confetti is available in imaginative shapes...

 and other atmospheric effects such as bubbles and snow.

Visual special effects techniques

  • Bullet time
    Bullet time
    Bullet time is a special and visual effect that refers to a digitally enhanced simulation of variable-speed photography used in films, broadcast advertisements, and video games...

  • Computer-generated imagery
    Computer-generated imagery
    Computer-generated imagery is the application of the field of computer graphics or, more specifically, 3D computer graphics to special effects in art, video games, films, television programs, commercials, simulators and simulation generally, and printed media...

  • Digital compositing
    Digital compositing
    Digital compositing is the process of digitally assembling multiple images to make a final image, typically for print, motion pictures or screen display...

  • Dolly zoom
    Dolly zoom
    The dolly zoom is an unsettling in-camera effect that appears to undermine normal visual perception. It is part of many cinematic techniques used in filmmaking and television production....

  • In-camera effect
    In-camera effect
    An in-camera effect is any special effect in a video or movie that is created solely by using techniques in and on the camera and/or its parts. The in-camera effect is defined by the fact that the effect exists on the original camera negative or video recording before it is sent to a lab or modified...

    s
  • Match moving
    Match moving
    In cinematography, match moving is a visual-effects, cinematic techniques that allows the insertion of computer graphics into live-action footage with correct position, scale, orientation, and motion relative to the photographed objects in the shot...

  • Matte painting
    Matte painting
    A matte painting is a painted representation of a landscape, set, or distant location that allows filmmakers to create the illusion of an environment that would otherwise be too expensive or impossible to build or visit. Historically, matte painters and film technicians have used various techniques...

  • Miniature effect
    Miniature effect
    A miniature effect is a special effect created for motion pictures and television programs using scale models. Scale models are often combined with high speed photography or matte shots to make gravitational and other effects appear convicing to the viewer...

    s
  • Morphing
    Morphing
    Morphing is a special effect in motion pictures and animations that changes one image into another through a seamless transition. Most often it is used to depict one person turning into another through technological means or as part of a fantasy or surreal sequence. Traditionally such a depiction...

  • Motion control photography
    Motion control photography
    Motion control photography is a technique used in still and motion photography that enables precise control of, and optionally also allows repetition of, camera movements. It can be used to facilitate special effects photography. The process can involve filming several elements using the same...

  • Optical effects
  • Optical printing
    Optical printer
    An optical printer is a device consisting of one or more film projectors mechanically linked to a movie camera. It allows filmmakers to re-photograph one or more strips of film...

  • Practical effect
    Practical effect
    A practical effect is a special effect in which a prop appears to work in a situation where it obviously could not in real life . They do not use trick photography or post-production artifice. This type of effect is normally found in live theatre.In film, practical effect denotes an effect produced...

    s
  • Prosthetic makeup
    Prosthetic makeup
    Prosthetic makeup is the process of using prosthetic sculpting, molding and casting techniques to create advanced cosmetic effects...

     effects
  • Rotoscoping
  • Stop motion
    Stop motion
    Stop motion is an animation technique to make a physically manipulated object appear to move on its own. The object is moved in small increments between individually photographed frames, creating the illusion of movement when the series of frames is played as a continuous sequence...

  • Go motion
    Go motion
    Go motion is a variation of stop motion animation, and was co-developed by Industrial Light & Magic and Phil Tippett.- History :Tippett and Industrial Light & Magic created the go motion technique for the first time for some shots of the tauntaun creatures and AT-AT walkers in the 1980 Star Wars...

  • Schüfftan process
    Schüfftan process
    The Schüfftan process is a movie special effect named after its inventor, Eugen Schüfftan . It was widely used in the first half of the 20th century before being almost completely replaced by the travelling matte and bluescreen effects....

  • Travelling matte
  • Virtual cinematography
    Virtual cinematography
    Virtual cinematography is an umbrella term used to describe cinematographic techniques performed in a computer graphics environment. This includes a wide variety of subjects like photographing real objects for the purpose of recreating them as three dimensional objects or algorithms for automated...

  • Wire removal
    Wire removal
    Wire removal is a visual effects technique used to remove wires in films, usually as a safety precaution or to simulate flying in actors or miniatures....


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