Full-Frame Compatible. Designed with a full-frame sensor in mind, the SZ 50mm f/1.4 offers stellar full-frame coverage, but can be used just as well on a crop-frame camera body as a 75mm focal-length lens.

Carl Zeiss Optics. Optically speaking, this is the lens Sony shooters have been anticipating. Based on the planar design, it features two glass-molded aspherical elements and an ED element to provide the highest possible image quality with minimal optical aberrations. It offers a virtually flat plane of focus with great edge-to-edge sharpness and illumination, as well as the high micro-contrast Zeiss lenses are known to produce.

Autofocus. Its built-in SSM motor provides fast, silent autofocus performance when shooting. The rear-focusing design means the lens’s exterior dimensions don’t change, allowing uninhibited filter use. The DMF compatibility enables quick manual fine tuning using the smooth MF ring, and the focus hold button allows you to hold focus via the lens rather than relying on the camera’s shutter button.

Build Quality. The sturdy aluminum alloy barrel construction provides strong durability under heavy use, while dust- and moisture-resistant weather sealing to provide protection from the elements.

Common Uses. The 50mm focal length is great for just about any type of photography. The fast f/1.4 aperture is great for shooting in low light, as well as isolating your subject from the background when shooting portraits.