What is the meaning of the medium focus in the SLR camera lens?
Need to pay attention to how many mm this is the standard 35mm camera, for small format camera (Nikon called DX format) lens, is to be converted, Nikon's conversion factor is 1.5, Canon is 1.6, such as a 100mm lens , The DX frame camera used, the equivalent of 150mm standard (FX) frame lens.
The focal lengths of the SLR cameras are roughly divided into ultra wide-angle (fish eyes), wide-angle, standard, medium coke, telephoto, super telephoto, coke in general refers to the focal length of about 100mm lens, the most suitable for portraits.
