MOS
MOS
MOS does indeed refer to a shot without recorded sound, however, the origin of the term is not so cut and dried. There is no definitive historical reference to the origin of MOS (I've looked many times) and there are many anecdotal explanations, "Mit Out Sound" being the most prevalent and commonly accepted. However, many people insist that MOS stands for "minus optical STRIPE" not minus optical SOUND. One of the earliest widely used sound recording methods was exposing an optical stripe directly onto the film at the time of shooting. It looked much the same as an optical stripe that is printed onto a modern release print. SO, there is no absolute answer to the question except that MOS refers to a shot without recorded sound. The real truth of the origin of the term MOS has been lost to history. My money, however, is on "Mit Out Sound". It's just so much more romantic of an explanation.