Describes the color characteristic of the subtractive filter applied to the image data. Multiple filters may be applied to a single acquisition.
None
Integer
No default
TWFT_RED(0), TWFT_GREEN(1), TWFT_BLUE(2), TWFT_NONE(3), TWFT_WHITE(4), TWFT_CYAN(5), TWFT_MAGENTA(6), TWFT_YELLOW(7), TWFT_BLACK(8)
TW_ARRAY, TW_ONEVALUE