Sony 16-35mm f/2.8 Carl Zeiss Vario-Sonnar T* SAL-1635ZA

(From Sony lens literature) The SAL1635ZA model is a super wide angle 16-35mm f/2.8 constant aperture zoom lens, well-suited for landscape, snapshot and indoor photography.

It is constructed of 17 lens elements in 13 groups, including an extra-low dispersion (ED) for exceptional clarity and center-to-edge resolution and a super ED glass element for much stronger correction of chromatic aberration or discoloration. It also features three aspherical lens elements that provide greater brightness from center to the edge of the image field.

Its Carl Zeiss T* (T star) coating technology provides higher light transmission, and minimizes flare to produce images of luminous clarity, color and sharpness.

The SAL1635ZA lens offers the utmost flexibility in challenging lighting conditions due to its wide f/2.8 constant aperture. Combined with Sony’s in-camera SteadyShot® Inside image stabilization system, this lens is the only large aperture, full-frame capable, wide-angle zoom lens with the benefit of stabilization in the industry.

Smooth, fast and precise focusing is delivered by Sony’s Super Sonic wave Motor (SSM) autofocus drive system. It utilizes a solid-state focus drive motor to provide silent, high-speed response, powerful torque and fine rotational control – critically important for large wide-aperture lenses. When attached to the flagship α900 camera body, the AF hold button can be customized to activate the intelligent preview function