ABSTRACT
Digital photography started in the 1980s with high- and ultra-high-definition (HDTV and UHDTV). The Japanese developed the Hi-Vision system consisting of 1250 lines interlaced TV as a standard in 1983. The system was standardized in the United States by SMPTE in the late 1990s. High-definition video is defined on a threefold scale. It has an aspect ratio of 16:9 (1.78:1). UHDTV is 3840 pixels wide by 2160 or in all 8.29 megapixels which is generally defined as 4K. There are now 6K and 8K resolution systems. Many companies now produce 4K cameras: ARRI, RED, JVC, Panasonic, Sony, Canon, Blackmagic, AIDA Came-TV, and Ordro. ARRI Alexia mini, RED Dragon, and Sony HDC-3500 are described in detail. The first projector to be usable for large screen imaging was an oil-film projector using a light valve developed in 1943 and called the Eidophor. Epson developed the first LCD (liquid-crystal display) in the early 1960s. Lasers came into use in the 1960s (light amplification by stimulated emission of radiation). The term IMAG became popular in concert touring and corporate presentations before use in television.
