This ultra-compact lens for Sony camera mounts, with a 35mm focal length and f/2.8 maximum aperture, keeps things low-profile while giving you real options during a shoot. Rokinon's 7-element aspherical glass optics deliver crisp, clear visuals, and the autofocus element takes the guesswork out of shooting from the hip. The standard lens diameter of 49mm also keeps things simple when you need caps, hoods, or filters, unlike the compact lenses some other brands offer. The lens is full-frame ready, and can focus as close as .39 meters whileavoiding the crop factor of a longer lens, making this a do-it-all 35mm worth having in your gear bag..