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Portrait photography: Color DepthFlash studio photography involves a controlled and usually maximal amount of light. Even when shooting with hand-held cameras, studio photographers rarely move from the lowest ISO setting. What matters most when shooting products or portraits is to aim for the richest color rendition.The best image quality metric that correlates with color depth is color sensitivity. Color sensitivity indicates to what degree of subtlety color nuances can be distinguished from one another, often meaning a hit or a miss on a pantone palette. Maximum color sensitivity reports, in bits, the number of colors that the sensor is able to distinguish.The higher the color sensitivity, the more color nuances that can be distinguished. As with dynamic range, color sensitivity is greatest when ISO speed is minimal, and falls rapidly with rising ISO settings. DxO Labs has focused on measuring only maximum color sensitivity.A color sensitivity of 22bits is excellent, and differences below 1 bit are barely noticeable.
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