This python script is intended to make nice linear transitions between bright and dark frames of a time lapse by adjusting the exposure, temperature, and tint levels in the .xmp files.
The interpolationController class is used to interpolate between two given .xmp files (file paths are parameters for the interpolationController) and write .xmp files to a specified folder (also a parameter for the interpolationController).
For exposure: crs:Exposure2012="[0]"
For white balance: crs:WhiteBalance="[Custom]"
temperature: crs:Temperature="[6000]"
tint: crs:Tint="[+8]"
For raw file name: crs:RawFileName="DSC_0011.NEF"