Specifications:

Focal length: 20mm
Maximum aperture: f/1.8
Minimum aperture: f/22
Lens mount: Sony E
Lens construction: 11 elements in 10 groups
Diaphragm blades: 7, rounded
Minimum focus distance: 7.5 inches (19 cm)
Maximum magnification: 0.18x
Filter diameter: 67mm
Dimensions: 3.1 x 2.8 inches (79 x 71 mm)
Weight: 1.1 pounds (495 g)

Features:

Fast f/1.8 constant aperture: Provides excellent low-light performance and a shallow depth of field for creating beautiful bokeh effects.

Advanced optical design: Incorporates XA (extreme aspherical) elements and Super ED glass to minimize aberrations and deliver sharp, detailed images.

Nano AR Coating: Reduces flare and ghosting for enhanced image contrast and clarity.

Fast and accurate autofocus: Features two XD Linear Motors for rapid and precise focusing, even in challenging lighting conditions.

Dust and moisture resistance: Built to withstand harsh conditions and protect against the elements.

Compact and lightweight design: Makes it easy to carry and use for various shooting scenarios.