The canon ef 24mm f14l ii usm lens is a fast aperture prime lens that replaces ef 24mm f14l usm featuring ud and aspherical elements to eliminate distortion and aberrations it produces high quality wide angle images and is ideal for both portraiture and landscapes canon ef 24mm f14l ii usm lens has wear and dust seals making it ideal for location photography and benefits from canons fast quiet usm autofocus system