KODAK COLORBURST 300 Instant Camera

The Kodak Colorburst 300, officially the EK300, was one of several models in Kodak's Colorburst line of instant cameras (which also included the 50, 100, 200, 250, and 350). It differed from the more basic Colorburst 100 mainly by adding a built-in electronic flash that slid out to one side, eliminating the need for disposable flashbulbs or flashcubes. It featured a 137mm f/11 focusing lens with a “Zooming Circle” viewfinder aid, an automatic electronic shutter operating between 1/20 and 1/300 second, motorized film ejection, and a manual darken/lighten exposure control, with its controls and lens protected by a hinged front cover.

Like other cameras in the series, it used Kodak's PR10 (PR144) instant film pack — a format Kodak introduced in 1976 that exposed the film from the back rather than the front, as Polaroid's system did, allowing for a more compact camera body. Kodak's instant photography business, including this format, ended after Polaroid won a long-running patent infringement lawsuit against the company, and because PR10 film hasn't been manufactured in decades, surviving Colorburst 300 units function today only as display pieces rather than working cameras. The camera is not particularly rare on the secondhand market, though many surviving units are sold untested, and flash malfunction is a commonly reported issue.