letmaik
Incorrect 'camera_whitebalance' matrix
Hello and thank you once again for your excellent work.
Issue:
camera_whitebalance returns [0, 1, 0], when As Shot White XY is used in the EXIF (instead of a more common As Shot Neutral)
Usually, when the WB is presented in a different manner, camera_whitebalance returns [0, 0, 0]
However, when processing is done with use_camera_wb = True the output image is balanced to "As Shot" properly, which mean that libraw or rawpy does calculate it OK somewhere, somehow.
Extra info:
I am trying to implement a different highlight-recovery method than the ones provided by libraw. Which means I need to work on un-scaled, un-balanced, un-matrix'ed values, which, after recovery, I have to re-scale, re-balance and re-matrix.
rawpy provides enough information from 90% of the files I've tested. Except for the ones that have White Balance provided as 'As Shot White XY'.
In the end it means that I'm not able to 'camera-balance' the files myself, since I only get access to daylight_whitebalance and color_matrix which can only get me to D65.
If you need a test-file, please let me know, I'll ask for permission to share it.
Thank you very much in advance. If you need any additional information please let me know.
I do beginner-level Python coding. Understanding C libraries and how they "connect" to Python is... let's say unrealistic.
Just bringing an issue to light. Anyway, thanks.