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In the video inset, the object moves with the camera and it does not zoom, so the FOV does not change; thus there is no dolly effect. A dolly zoom (also known as a Hitchcock shot , [ 1 ] [ 2 ] [ 3 ] Vertigo shot , [ 4 ] [ 2 ] Jaws effect , [ 4 ] or Zolly shot [ 5 ] ) is an in-camera effect that appears to undermine normal visual perception .
The camera is mounted to the dolly and the camera operator and focus puller or camera assistant usually ride on the dolly to push the dolly back and forth. The camera dolly is generally used to produce images which involve moving the camera toward or away from a subject while a take is being recorded, a technique known as a "dolly shot".
In cinematography, perspective distortion also has bearing on the in-camera special effect known as the dolly zoom, in which a zoom lens zooms out at the same time as the camera moves toward the subject, in such a way as to keep the subject the same size in the frame while the background "changes size" relative to the subject.
English: Early test of a computer generated 3D representation of the W:Dolly zoom film technique. Generated using the W:POV-Ray raytracer, version 3.6.1b.icl8.win32. Focal blur and radiosity used to enhance realism. 100 different frames took almost 2 days to render.
Or it is performed towards shorter focal lengths, giving a "zoom out" effect: The filmed object will shrink in apparent size, and more objects come into view. The speed of the zoom allows for a further degree of cinematographic freedom. Combined with a dolly camera move it is possible to create the dolly zoom effect. [1] [self-published source?]
Traditionally dolly shots are filmed from a camera dolly but the same motion may also be performed with a Steadicam, gimbal, etc. A dolly shot is generally described in terms of "dollying in" or "dollying out". Also known as trucking in and out, or right and left. Dolly zoom
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Often the camera is mounted on a camera dolly which rides on rails similar to a railroad track; in this case, the shot is referred to as a dolly shot. A handheld steadycam or gimbal may also be used for smaller scale productions. The camera is then pushed along the track while the scene is being filmed, or moved manually when using a handheld rig.
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