41. Image produced by camera aperture type w on 16mm motion - picture film - position and dimensions 42. Recorded characteristics for magnetic sound records on 35mm and 16mm motion - picture films containing no picture 43. Cinematography - safe picture areas for motion - picture films for television - position and dimensions 44. Image area produced by camera aperture on 35mm motion - picture film - position and dimensions 45. Cinematography - projectable image area on 16 mm motion - picture prints - dimensions and location 46. Projection of still pictures and motion - pictures in educational and amateur use ; graphical symbols 47. Cinematography - 35 mm motion - picture film and magnetic film - cutting and perforating dimensions 48. Optical printing ratios for enlargement and reduction of motion - picture film images - specification 49. Requirements on motion - picture films and sound records ; motion - picture prints for optical projection
