9/24/2023 0 Comments Motion camera![]() ![]() ![]() The 1968 film 2001: A Space Odyssey pioneered motion control in two respects. His film Catalog (1961) and his brother James Whitney's film Lapis (1966) were both achieved with John's pioneering motion control system. By changing the frame rates and the depth of field, models can seem to be much larger than they actually are, and the speed of the camera motion can be increased or decreased accordingly.Įarly attempts at motion control came about when John Whitney pioneered several motion techniques using old anti-aircraft analog computers ( Kerrison Predictor) connected to servos to control the motion of lights and lit targets. Motion-control also requires control over other photographic elements, such as frame rates, focus, and shutter speeds. The solution is to move the camera, rather than the model, and the advent of compact lightweight 35mm cameras has made machine-controlled motion control feasible. Solving this by building a larger model introduces a dilemma: larger models are more difficult to build and often too fragile to move smoothly. Modelmaking for scenery has long been used in the film industry, but when a model is too small it often loses its illusion and becomes "obviously a model". Similar technology in modern film allows for a camera to record its exact motion during a shot so that the motion can be duplicated by a computer in the creation of computer generated elements for the same shot. For the sake of compositing, the background elements of the scene must remain identical between takes, requiring anything movable to be locked down the blank reference take can aid in resolving any discrepancies between the other shots. Several basic camera tricks are sometimes utilized with this technique, such as having the hand of a body double enter a shot to interact with the actor while the duplicate's arm is to be off-screen. ![]() It is far more difficult to composite the shots when the duplicate elements cross paths, though digital technology has made this easier to achieve. A simple duplication shot confines each "copy" of an element to one part of the screen. In today's film, the reference take is also useful for digital manipulation of the shots, or for adding digital elements. This, in common film-making language, is also known as shooting a "plate". A blank take (with no actor in the shot) is sometimes also taken to give compositors a reference of what parts of the shot are different in each take. For this technique, the camera typically films exactly the same motion in exactly the same location while the actor performs different parts. The process is also commonly used when duplication of an element which cannot be physically duplicated is required motion control is the primary method of featuring multiple instances of the same actor in a shot that involves camera movement. Common applications of this process include shooting with miniatures, either to composite several miniatures or to composite miniatures with full-scale elements. Today's computer technology allows the programmed camera movement to be processed, such as having the move scaled up or down for different sized elements. Motion control camera rigs are also used in still photography with or without compositing for example in long exposures of moving vehicles. Other effects are often used along with motion control, such as chroma key to aid the compositing. The process can involve filming several elements using the same camera motion, and then compositing the elements into a single image. It can be used to facilitate special effects 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. Motion control camera dolly with Canon DSLR camera JSTOR ( February 2008) ( Learn how and when to remove this template message).Unsourced material may be challenged and removed.įind sources: "Motion control photography" – news Please help improve this article by adding citations to reliable sources. This article needs additional citations for verification. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |