There is only one file type that uses the .LOOK extension:
SpeedGrade Look File
Color corrections data file exported by SpeedGrade, a color grading program used in video production; contains a 3D lookup table (LUT) that contains all color corrections made to a video; can be applied non-destructively to video data during the editing process.
LOOK files can correct poor color or be used for operations such as making a movie scene look cold with blue colors or warm with reds.
NOTE: The LOOK file format was developed by IRIDAS, who was acquired by Adobe Systems. IRIDAS also developed the .IRCP format, which is also used by SpeedGrade.
Updated: January 16, 2014