And, of course, there are the instr

And, of course, there are the instruments which catch all and should dramatize all; the tools the director speaks through, the CAMERA and the TAPE RECORDER. The film director obviously must know the Camera and its lenses, which lens creates which effect, which one lies, which one tells the cruel truth. Which filters bring out the clouds. The director must know the various speeds at which the camera can. roll and especially the effects of small variations in speed. He must also know the various camera mountings, the cranes and the dollies and the posmoves, its warning signs, its crises, the kind of clouds and what they mean