How much is the wide angle, short focus, medium focus and telephoto?

Below 14, it can be counted as fisheye 30-70, medium focus 70-200 and telephoto 200+, and it can be called super telephoto wide-angle lens, also known as short-focus lens, which can be divided into ordinary wide-angle lens and super wide-angle lens. 135 camera's common wide-angle lens has a focal length of 38-24 mm and a viewing angle of 60-84 degrees. The ultra wide-angle lens has a focal length of 20- 13mm and a viewing angle of 94- 1 18 degrees. The medium focal length lens, according to international practice, is a lens with a focal length of 35-80mm equivalent to a 35mm camera; Some people in China think that it should be 40 ~ 90 mm, and telephoto lens is a photographic lens with a longer focal length than standard lens. Telefocal lenses are divided into ordinary telephoto lenses and ultra-telephoto lenses. The focal length of ordinary telephoto lens is close to that of standard lens, while the focal length of ultra telephoto lens is much larger than that of standard lens. Take 135 camera as an example, the photographic lens with a focal length of 85 mm-300 mm is a normal telephoto lens, and the lens with a focal length of more than 300 mm is a super telephoto lens.