Now, I want to create a dng file with my camera, and set the AsShotNeutral as follow:
1. I get the white balance ratio as GainR, GainG, GainB, and set the AsShotNeutral as: GainG/GainR; 1; GainG/GainB.
For example, the GainR = 6508, GainG = 4096, GainB = 7609; the AsShotNeutral is [0.629379, 1, 0.538309]
2. The colormatrix is D50 XYZtoRGB as follow:
3.1338561 -1.6168667 -0.4906146
-0.9787684 1.9161415 0.0334540
0.0719453 -0.2289914 1.4052427
Then I capture a dng file with my camera, and open the dng with the photoshop. It looks ok, however, when I change the exposure time from 1.40 to -1.40, the bright white become s light pink.
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