A Brief History
ECN-II (Eastman Color Negative II) film is a type of color negative film primarily designed for motion picture use. Developed by Kodak, ECN-II was introduced as an advancement over the earlier ECN process, allowing for improved processing and image quality.
A company by the name of Seattle Filmworks would buy up unused ECN-II movie film, repackage it, and send it to customers "for free." The catch was the film could not be developed with standard chemistry, so customers had to mail the film in to Seattle Filmworks for processing.
Seattle Filmworks eventually closed their doors, however many rolls of "Seattle Filmworks" film still exist, still waiting to be developed.
We at The Camera Shop, through our years of experience and a bit of science, have developed our own method for developing this ancient film. If you happen to find a roll and are curious to know what it might contain, we are here to help.