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A number of In Camera tricks were developed in the early days of film when there was not only the obvious lack of CGI but also a lack of film manipulating technology. Of course then a number will have been replaced by easier, more technologically advanced means but some also died out because they were only applicable to black and white. Coloured filters, for instance, could be used to block out light from red or green, rendering some objects or makeup hidden to the monochrome camera until the filters were removed, creating a reveal.
Many older techniques still remain. Filters are now used but for shifts to the infrared to create surreal lighting effects. Over- or undercranking (where the film is moved faster or slower through the reels) is still used to produce slow or sped up motion.
Some other interesting In-Camera Effects:
- With older, non-digital cameras, using a black screen or cover so that only part of the film is exposed (and thus the rest can have something else filmed onto it.
- A dark filter could be used to simulate night-time while shooting in daytime. Unfortunately it does nothing to eliminate shadows caused by sunlight, leading to the slightly hilarious effect of having obvious sun-shadow at night.
- A filmmaker could create a "ghost" by exposing the film to the same scene twice, once with and once without the actor.
- Matte paintings were often used as backdrops with the focus kept off them. Bipacking was a method where instead footage was shot of just the matte and then was placed in the camera, overlayed on top of the unexposed film. When the camera ran and the film was exposed, the image of the matte would be imprinted on it.
- In 2001: A Space Odyssey, the long shot of astronauts in the lunar excavation used bipacking.
- Cinematographer Karl Strauss made pioneering work with filters. He would have actors' make-up be done in red or green and then put red or green filters to take them out of the picture. The filter could be slowly changed and the make-up would be changed.
- 1931's Dr Jekyll and Mr Hyde had the Jekyll to Hyde transformation made entirely on screen with the camera on him, the physical character change being done only with the use of filters and decent acting.
- In Ben-Hur, the lepers' sores were done in red make up and then filtered out for the healing scene.
- The Tracking Zoom is made by having a camera on a dolly zoom in while the dolly moves away. The subject stays in the same place but the perspective of everything around it changes. You've probably Seen It a Million Times, sometimes the human eye can give this effect but for an example, the distorting zoom in on Sheriff Brody's face in Jaws.
- Traditional matte paintings were used even as recently as the first Terminator movie: the last shot where Sarah drives off into the desert, and A Storm Is Coming.
- The TV Star Trek series would achieve the shaking of the bridge when under attack by simply shaking the camera and getting the crew to wobble about. Later SF productions with a bigger budget, such as the Trek films, replaced the cheesy effect with Practical Effects: sets would be placed on top of a large platform and the camera would be still while the entire set was shaken. That would be counted as Practical Effects.
- An In-Camera example is the "He Plays The Violin" dance in the garden during 1776, seen here, the dolly shot starting at 5:10.
- Spoofed in Top Gear when Jeremy Clarkson attempted to get a 'dramatic soft focus' effect by smearing petroleum jelly on the camera lens. Didn't go well.
- A modern, digital camera example came in 28 Days Later. All of the scenes of the infected were shot with the shutter speed of the Canon XL-1 camera set very high, resulting in an unsettling and "jumpy" look.
- A hand-cranked camera was used during part of the shootout in Hot Fuzz, allowing both undercranking and overcranking to be used for added dramatic effect.