Definition Pro films rejects ambient light and adds a ton of contrast, it can be used in direct sunlight but does require 20% more lumens then Definition Film. (this to be used on all rear projection and dualview pages in the short description area): Screen Solutions projection films are sold by the linear foor. One foot at a time by the roll widtch, which is 60″ (5′). eample: quantity 1 would be 1’x5′ of film. For custom cuts please contact us.