Translations:Adventist Youth Honors Answer Book/Arts and Crafts/Photography/81/en

Eventually, a practical method using a 'subtractive' method was the Kodachrome process, the first commercially successful amateur color film, introduced in 1935. It produced much brighter color transparencies. The Kodachrome K-14 developing process is very complicated and requires technicians with extensive chemistry training, as well as large machinery which is extremely difficult to operate. This complexity discourages use by home amateurs or small laboratories. In the early 1990s Kodak offered the "K-Lab" process to small labs in an attempt to increase the availability of the K-14 process, but ultimately this was not successful; with the final two K-Lab -equipped labs (Horiuchi Color in Tokyo and Kodak's own plant in Lausanne) shutting down and Kodak discontinuing the "B-I-B" (bag-in-box) K-14 chemistry required for the K-Lab.