Samsung EX-W20NB lens is a wide-angle lens with a filter size of 43 mm; it has automatic or manual focus. Samsung EX-W20NB is what they called the pancake lens because it's 2.4 x 1.0-inches and weighs about 3 oz. This particular Samsung lens has lens distortion compensation to reduce image distortion. This auto and manual focus camera lens is equivalent to the 30.2 mm x 35 mm format and it has six elements in four groups. Samsung EX-W20NB has an updated graphic user interface to support the I-function lens technology. Users can manually select and adjust shutter speed, aperture value, ISO sensitivity and white balance on this Samsung lens. This auto and manual focus camera lens supports scene mode which includes backlight, landscape, sunset, dawn, beach/snow, and night which means it won't be hard to take a picture in any lighting. This camera lens also has a focus length that is fixed/prime.