This film is basically clear film, but has a coating on the emulsion side that allows an image to be projected on it, similar to frosted glass. We use small sections of the film and place it at the image plane, then a bore sight that is mounted on the camera is used to look at the image projected on the film to focus and align the camera. These cameras are old, Nova high-speed units made by Photo-Kinetics. They use a rotating prism instead of a shutter mechanism. Top speed is 40,000 frames/second.
