Excuse me: How long are the camera's super wide-angle lens, wide-angle lens, standard lens, medium-focus lens, medium-telephoto lens, telephoto lens and super telephoto lens?

There is no accurate definition of these concepts, and there are great differences for different sizes of photosensitive formats. For 135 Quan Huafu lens, 50mm is the standard lens; But for large-format cameras, the 50mm lens is wide-angle; For 1/2.3 card machine, the 50mm lens is definitely a telephoto lens.

For 135 Quan Huafu, focal lengths less than 15 and 6mm are generally considered as ultra-wide, 15 and 6mm to 35mm are wide-angle, 35mm to 60-75mm is standard, and 60-75mm to 100- 135mm is medium-focus.