Characteristics and performance of medium focal length lens

The medium focus lens is a lens with a focal length of 85 mm to 135 mm, which is 1, 5 to 4 times the focal length of the head. It is usually called a medium focal length lens. The photo taken by this focal segment has the smallest deformation, which can correctly reflect the shape of the subject, and it is relatively easy to design it into a super-large aperture. In portrait photography, the medium focal length lens is the most commonly used. Medium focus lens is characterized by small image field deformation, high imaging sharpness and comfortable perspective. Very suitable for shooting busts, close-ups, landscapes, human sketches, etc. In particular, the medium focus fixed focus lens is the one with the best imaging quality among all lenses.