The Sony Cyber-shot DSC-W310 digital camera is based around a 1/2.3"-type 12.1 effective megapixel Sony SuperHAD CCD image sensor with RGB color filter array, coupled to a Sony-branded 4x optical zoom lens. The Sony W310's lens offers a 35mm-equivalent range from a useful 28mm wide angle to a moderate 112mm telephoto. The lens has a two-step aperture which offers either F3.0 or F4.3 at wide angle; at telephoto the maximum aperture is F5.8, and the minimum aperture isn't stated.