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DPX

A common file format for digital film work is the ANSI/SMPTE DPX file format which represents the density of each colour channel of a scanned negative in a "10-bit log" format. There is typically a different file for each frame, often 20 to 50 megabytes in size.

The DPX file format is derived from the output file format of the Kodak Cineon film scanner, and has been published by SMPTE as ANSI/SMPTE 268M-1994.

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