The Olympus M. Zuiko Digital ED 45mm f/1.8 Lens is a great portrait lens and has a beautiful shallow depth of field which allows for background blurring effects that are not possible with the 14-42mm kit zoom lens. The Movie-Still-Compatible (MSC) mechanism utilizes nearly "silent" focusing technology. It is great for tracking a moving child or pet, and provides a quick and silent focus mechanism for movies and still photography.