Carl Zeiss Planar T* 50mm f/1.4 ZA SSM

Manufacturer's Description:

"The new Planar T* 50mm F1.4 ZA SSM joins the existing Distagon 24mm, Planar 85mm and Sonnar 135mm in the A-mount range of prime length optics by Carl Zeiss. Offering a fixed 50mm focal length and extra-bright F1.4 aperture, the premium lens is an ideal choice for quality-critical portraiture and low-light shooting.

Featuring eight elements in five groups, with two aspherical elements, the brand new optical design is optimised for superb results with SonyÂ’s full-frame α99.

Exceptional resolving power and contrast at all apertures are teamed with smooth, quiet autofocusing and a rear-focus system that maintains the same lens body length during AF. While the dust- and moisture-resistant design extend the appeal of the new lens to a wide range of outdoor shooting applications."