Fast portrait lens. Rounded seven-blade diaphragm contributes to a pleasing booked quality Minimum focusing distance: 0.20M, focal length: 45mm Maximum f/1.8 aperture, great for low light shooting, f/1.8 maximum aperture delivers beautiful defocused backgrounds Quiet movie-still-compatible lens Drive for video shooting Optional lh-40b lens hood for shooting in bright conditions. Angle Of View: 27 This single focal length portrait lens has a beautiful shallow depth of field, which enables the background blurring effects not possible with the 14 42mm kit Fixed lens. The MSC mechanism is great for tracking a moving child or pet, and provides a quick and silent focus mechanism for movies and still photography.