Color Models

Profondeur de bit

Le nombre de bits alloués par canal de couleur, déterminant la précision des valeurs de couleur dans une image numérique.

Bit depth per channel affects the smoothness of tonal transitions. An 8-bit image has 256 levels per channel, which is usually sufficient for final output but can show banding when heavily edited. A 16-bit image has 65,536 levels per channel, providing much more editing headroom. In video, 10-bit is the standard for HDR content, offering 4 times the levels of 8-bit. When working with gradients, shadows, or color grading, higher bit depth prevents visible stepping artifacts known as posterization or banding.

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