Archive for June 11th, 2012

June 11, 2012



A pseudoscope [soo-duh-skohp] (‘false view’) is a binocular optical instrument that reverses depth perception. It is used to study human stereoscopic perception. Objects viewed through it appear inside out, for example: a box on a floor would appear as a box shaped hole in the floor. It typically uses sets of optical prisms, or periscopically arranged mirrors to swap the view of the left eye with that of the right eye.

 In the 1800s Victorian scientist Charles Wheatstone coined the name and used the device to explore his theory of stereo vision. Switching the two pictures in a standard stereoscope changes all the elevated parts into depressions, and vice versa.

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June 11, 2012

Slit-scan Photography


The slit-scan photography technique is a photographic and cinematographic process where a moveable slide, into which a slit has been cut, is inserted between the camera and the subject to be photographed. Originally used in static photography to achieve blurriness or deformity, the slit-scan technique was perfected for the creation of spectacular animations. It enables the cinematographer to create a psychedelic flow of colors.

Though this type of effect is now often created through computer animation, slit-scan is a mechanical technique. It was adapted for film by Douglas Trumbull during the production of Stanley Kubrick’s ‘2001: A Space Odyssey’ and used extensively in the ‘stargate’ sequence. It requires an imposing machine, capable of moving the camera and its support.

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