How The Empire Strikes Back perfected the art of the blue screen in the 80s

Mark Vargo is a pioneer of cinematography and a huge contributor to the special effects industry.

Watch in the video below how Mark explains step-by-step how ILM processed their blue-screen footage in The Empire Strikes Back.

Vargo mentions they used rear-lit blue screens that emit light in a very specific range of 500 nanometers. Captured blue screen footage was then sent to an optical printer where the footage is then photographed again into a combined composite image.

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