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The Advanced Digital Photographer's Workbook by Yvonne J. Butler

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Chapter 1

Calibration and Color Correction

Taz Tally

Grayscale, Color, and Why Calibration Is Important

Calibration is the process by which an image-capture or output device is adjusted so it will accurately, predictably, and consistently reproduce image data. In the case of digital-capture devices, such as scanners and digital cameras, you focus on the accurate, predictable, and consistent capture of black and white or grayscale data. There is no such thing as a color scanner or color digital camera; they do not exist! Scanners and digital cameras, being digital devices, only capture 1s and 0s or black and white as various shades of gray ...

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