The Sony E16mm f 2. 8 Lens is a light, low-profile pancake lens that fits comfortably on the front of both the Sony NEX-3 & NEX-5 cameras, maintaining the slimline look & slipping easily into your pocket. Great for everyday shooting, this 16mm lens contains high-quality optics including a 7 blade circular aperture for beautiful defocus effects & an aspheric surface for excellent contrast & sharpness. The lens features direct Manual Focus with a non-rotating focus ring during Auto Focus, ideal for precise, comfortable adjustments. The Sony 16mm f 2. 8 Lens is compatible with the optional VCL-ECU1 ultra-wide converter & optional VCL-ECF1 fisheye converter.