Wednesday, 17 October 2012

Negative Scanner

Negative Scanner

"Slide" (positive) or negative film can be scanned in equipment specially manufactured for this purpose. Usually, uncut film strips of up to six frames, or four mounted slides, are inserted in a carrier, which is moved by a stepper motor across a lens and CCD sensor inside the scanner. Some models are mainly used for same-size scans. Film scanners vary a great deal in price and quality. Consumer scanners are relatively inexpensive while the most expensive professional CCD based film scanning system was around 120,000 USD. More expensive solutions are said to produce better results. Raw image files are sometimes called digital negatives, as they fulfill the same role as negatives in film photography: that is, the negative is not directly usable as an image, but has all of the information needed to create an image. Digital Picture Exchange (DPX) is a common file format for digital intermediate and visual effects work and is an ANSI/SMPTE standard (268M-2003). The file format is most commonly used to represent the density of each colour channel of a scanned negative film in an uncompressed "logarithmic" image where the gamma of the original camera negative is preserved as taken by a film scanner.

Negative Scanner

Negative Scanner

Negative Scanner

Negative Scanner

Negative Scanner

Negative Scanner

Negative Scanner

Negative Scanner

Negative Scanner


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