Standard dynamic range
Standard-dynamic-range video describes images/rendering/video using a conventional gamma curve, and therefore presenting a dynamic range that is considered standard, as opposed to high-dynamic-range video. The conventional gamma curve was based on the limits of the cathode ray tube (CRT) which allows for a maximum luminance of 100 cd/m2. The first CRT television sets were manufactured in 1934 and the first color CRT television sets were manufactured in 1954.