Describes the general color characteristic of the light source used to acquire the image.
None.
Integer
No default
TWLS_RED(0), TWLS_GREEN(1), TWLS_BLUE(2), TWLS_NONE(3), TWLS_WHITE(4), TWLS_UV(5), TWLS_IR(6)
TW_ENUMERATION, TW_ONEVALUE
ICAP_EXPOSURETIME, ICAP_FLASHUSED2, ICAP_LAMPSTATE, ICAP_LIGHTPATH