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Chapter 2. How Camera Raw Works > White Balance and Calibrate Adjustments

White Balance and Calibrate Adjustments

White Balance (Color Temperature and Tint), in addition to any adjustments made in Camera Raw's Calibrate tab, actually tweak the conversion from native camera space to an intermediate, large-gamut processing space. (This intermediate space uses ProPhoto RGB primaries and white point, but with linear gamma rather than the native ProPhoto RGB gamma 1.8.)

These operations work by redefining the colorimetric definition of the camera RGB primaries and white rather than by redistributing the pixel values. It's simply impossible to replicate these corrections in Photoshop,so it's vital that you take advantage of Camera Raw to set the white balance and, if necessary, to tweak the calibration for a specific camera. (I'll save the detailed description of how to use these controls for the next chapter, Using Camera Raw Controls.)


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