The Olympus M.Zuiko Digital ED 12mm f/2.0 Lens Special Edition is compatible with the PEN series of interchangeable-lens digital cameras. It is a prime lens with a fixed focal length of 12mm. The wide, fast f/2.0 aperture creates a shallow depth of field and improves image quality in low-light conditions. The lens features an ED (extra-low dispersion) glass element, which reduces chromatic aberrations for greater accuracy in your images. The lens focuses from 0.67' (0.2 m) to infinity and provides a 0.5x magnification.