- In my changes lift was acting like a second gamma. - In blender 2.4x it was being added which gave ugly clipping. - in Magic Bullet Looks it scales the color about 1.0: (col - 1 * (2-lift)) + 1 Did more testing and made sure the order of applying lift/gamma/gain works the same as MagicBulletLooks (tested on Collin's mac laptop).