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Subject: Re: ACR Calibration



Something I would like to see is the ability to embed any unit-to-unit deviations within the DNGs during DNG Conversion.

It is a bit strange to have one method for supporting the camera-type colour calibration, using transformation matrices that convert between CIE XYZ values and reference camera native color space values, and a quite different method for within-type variations, using sliders within ACR.

The DNG specification permits extra matrices that transform reference camera native space values to individual camera native space values, to used in conjunction with the camera-type colour calibration. A camera manufacturer could use these to tweak the calibration for any individual camera. Why can't photographers do this?

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