This standard is a revision of Part II of 50 I R E 23.SI, and replaces it in air respects. One of the major characteristics of a television system affecting over-all picture quality is the ability of the system to reproduce fine detail found in the original image. This ability to resolve detail is determined by a number of factors, such as the number of scanning lines employed, the frame repetition rate, and the over-all response of the electrical circuits, which is usually specified in terms of the frequency-response characteristics. Performance of the optical imaging device, the camera tube, and the reproducing device also has considerable influence on the ability of the system to resolve detail
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