1. A method comprising: using a computer or a motion picture playback apparatus to perform steps of: for each of a plurality of still images of a motion picture: processing each still image to determine portions that have a low intensity that is low enough that they can be intensity compensated; rendering a respective sequence of sub-frames such that each sub-frame comprises the still image with one or more portions of the sub-frame having a brightness that is less than that of the corresponding one or more portions of the still image, wherein the one or more portions of the sub-frame that have a brightness less than that of the corresponding one or more portions of the still image are selected from the portions of the still image determined to have low intensity; applying intensity compensation such that when the sequence of sub-frames is displayed, an image substantially equivalent to the still image is perceptable.