Canon EF 135mm f/2.8 with Softfocus Telephoto Lens for Canon SLR Cameras

EF mount; telephoto lensInternal focusing; aspherical lens135mm focal lengthf/2.8 maximum apertureRear focusing system with Autofocus drive
Product DescriptionA unique, compact telephoto lens that gives the choice of razor-sharp images, or with the twist of a ring, two degrees of soft focus. It works by applying "softness over sharpness," using deliberate spherical aberration on top of a sharp "core" image at apertures from f/2. 8 thru 5. 6; images taken at apertures smaller than f/5. 6 are

Source: Digital Camera and Video Store...