Various means of recording vision-frequency signals are considered. For high-definition television, it is concluded that the information must be recorded transversely to the direction of movement of the recording medium, and that the transverse movement must be achieved electrically. Photographic recording appears to be the only practicable method.The film may be moved at constant velocity or intermittently, and some known systems are classified under these headings and described with their advantages and disadvantages, particular attention being given to the two methods now in use by the B.B.C.Various factors affecting the performance of television-recording cameras are then discussed, such as picture joins, interlacing, loss of definition on movement, optical efficiency, film stability, emulsion pil-up, and spot-position modulation.A suitable arrangement of the vision-frequency equipment is dealt with, and the necessary electrical corrections are described. The factors governing the choice of a cathode-ray tube for recording purposes are discussed, while some possible improvements are indicated.The various transfer characteristics concerned have been measured, and the possibility of contrast correction is discussed, together with possible ways of improving the overall performance, such as highgamma recording. The conditions for making satisfactory positive prints direct from negative television pictures are stated.Some conclusions based on operating experience of continuous and intermittent systems are then given.