Color profiles in photography Bob Peters, GSFC Photo Club.

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Presentation transcript:

Color profiles in photography Bob Peters, GSFC Photo Club

 Saturation, hue, brightness, or 3 colors, most cameras use Super RGB (higher saturation than RGB), amount of red, green, blue ◦ Does the camera sensor accurately record color ◦ Does the monitor accurately display color recorded by the camera ◦ Does the printer/projector accurately reproduce the color of the monitor  Reproducing color print especially iffy because different papers will produce different colors from the same printer and same ink.

 “ In color management, an ICC profile is a set of data that characterizes a color input or output device, or a color space, according to standards promulgated by the International Color Consortium (ICC). Profiles describe the color attributes of a particular device or viewing requirement by defining a mapping between the device source or target color space and a profile connection space (PCS)…. Mappings may be specified using tables, to which interpolation is applied, or through a series of parameters for transformations.”color managementcolor spaceInternational Color Consortiumcolor spaceinterpolation

Does the camera sensor accurately record color -> Does the monitor accurately display color recorded by the camera -> does the printer/projector accurately reproduce the color of the monitor SceneCamera Monitor Print This talk Color Monkey

 Most people prefer more saturated colors that accurate colors  People almost always want warmer face tones, even experienced photographers do not judge color accurately

 Either printer software or photo editing software (Photoshop) can be used to profile printer  Profiles are paper specific, type and brand  Paper profiles supplied by printer are specific to printer manufacturers paper, 3 rd party paper suppliers supply profiles for common printers  Printer profiles are easier to use, fewer profiles  Can make custom profiles with appropriate software/hardware

 If Photoshop manages color, Printer software must be set to “no color correction” or similar  If printer software is color correction, PhotoShop must be set to “Printer Manages color”  Never, ever have both printer and Photoshop manage colors!!!!!!

Double profile