Kinemacolor

Kinemacolor was an early additive color motion picture process introduced around 1906. It aimed to create color films by using a single black-and-white film strip. This film was photographed and projected at 32 frames per second, twice the normal silent film speed, and passed through a rotating color filter. The process reduced the three primary color records to two: red-orange and blue-green, which occupied alternate frames. The human eye's retention characteristic was meant to integrate these frames into a color image. However, Kinemacolor faced limitations, including visible displacement during rapid movement, leading to color fringing. Additive color systems like Kinemacolor generally proved too complex and costly for widespread adoption due to the need for special cameras and projectors.12