This lens has a classic combination of focal length and maximum aperture for many subjects where you want to concentrate on a part of the image and at the same time have access to large apertures. The lens is light and compact and provides superb image quality at all apertures. It is also constructed with special consideration for a beautiful drawing in the blurred parts of the image. The front of the lens does not rotate when you focus and it is therefore easy to use special filters. The 85mm focal length is optimal for, among other things, portrait photography.