Sony E 16-50mm f/3.5-5.6 PZ OSS SELP1650
(From Sony lens literature) Measuring just 1-3/16" (29.9mm) when fully retracted, this SELP-1650 retractable zoom lens is super compact and easy to carry so you can quickly whip out your camera and spontaneously grab shots as they occur. It's perfect for traveling and other scenarios that require a lightweight, compact camera and lens combo. It covers a 16mm to 50mm range (35mm equivalent = 24-75mm) for flexible shooting, and is equipped with one ED (extra-low dispersion) and four aspherical elements, resulting in a high-performance lens that is surprisingly compact.
The Sony E 16-50mm f/3.5-5.6 PZ OSS is the first Sony alpha lens to feature an electronically driven zooming mechanism. This provides multiple advantages such as a compact size when the camera is powered off, while instantly extending when powered on. Also, the lens features a power zoom slider switch, providing smooth, quite zooming, which is very beneficial when shooting video.
Other features include Sony's Optical SteadyShot image stabilization technology, reducing vibrations for both still images and video.
The lens was released in January 2013, and is available as a kit lens with Sony NEX cameras such as the NEX-3N and NEX-6.