Sony Carl Zeiss Sonnar T E 24mm F1.8 ZA E-mount Prime Lens Employs the legendary "Sonnar" optical design for standout image dimensionality and presence Seven aperture blades form a near circle, which results in a pleasing defocused effect on the background of your image when the aperture is set wide open Allows for 1/4 macro shooting with accurate focus as close as 6.2 inches (16cm) Direct Manual Focus (DMF) allows for direct manual focusing after autofocus lock-on without having to switch modes Lens operation is fast but at the same time smooth and quiet, minimizing noise and image jitter when shooting movies