|Private TIFF Tag CalibrationIlluminant2|
TIFF Tag Reference
TIFF Tag CalibrationIlluminant2
Used in IFD 0 of DNG files.
The illuminant used for an optional second set of color calibration tags (ColorMatrix2, CameraCalibration2, ReductionMatrix2). The legal values for this tag are the same as the legal values for the CalibrationIlluminant1 tag; however, if both are included, neither is allowed to have a value of 0 (unknown).