<P> After experimenting with additive systems (including a camera with two apertures, one with a red filter, one with a green filter) from 1915 to 1921, Dr. Herbert Kalmus, Dr. Daniel Comstock, and mechanic W. Burton Wescott developed a subtractive color system for Technicolor . The system used a beam splitter in a specially modified camera to send red and green light to adjacent frames of one strip of black - and - white film . From this negative, skip - printing was used to print each color's frames contiguously onto film stock with half the normal base thickness . The two prints were chemically toned to roughly complementary hues of red and green, then cemented together, back to back, into a single strip of film . The first film to use this process was Toll of the Sea (1922) starring Anna May Wong . Perhaps the most ambitious film to use it was The Black Pirate (1926), starring and produced by Douglas Fairbanks . </P> <P> The process was later refined through the incorporation of dye imbibition, which allowed for the transferring of dyes from both color matrices into a single print, avoiding several problems that had become evident with the cemented prints and allowing multiple prints to be created from a single pair of matrices . </P> <P> Technicolor's system was very popular for a number of years, but it was a very expensive process: shooting cost three times that of black - and - white photography and printing costs were no cheaper . By 1932, color photography in general had nearly been abandoned by major studios, until Technicolor developed a new advancement to record all three primary colors . Utilizing a special dichroic beam splitter equipped with two 45 - degree prisms in the form of a cube, light from the lens was deflected by the prisms and split into two paths to expose each one of three black - and - white negatives (one each to record the densities for red, green, and blue). </P> <P> The three negatives were then printed to gelatin matrices, which also completely bleached the image, washing out the silver and leaving only the gelatin record of the image . A receiver print, consisting of a 50% density print of the black - and - white negative for the green record strip, and including the soundtrack, was struck and treated with dye mordants to aid in the imbibition process (this "black" layer was discontinued in the early 1940s). The matrices for each strip were coated with their complementary dye (yellow, cyan, or magenta), and then each successively brought into high - pressure contact with the receiver, which imbibed and held the dyes, which collectively rendered a wider spectrum of color than previous technologies . The first animation film with the three - color (also called three - strip) system was Walt Disney's Flowers and Trees (1932), the first short live - action film was La Cucaracha (1934), and the first feature was Becky Sharp (1935). </P>

When were the first moving colour images produced