Sony 20mm f/2.8 Alpha E-mount Lens


  • 20mm Prime Lens
  • Aperture Range: f/2.8-16
  • 30mm Equivalent in 35mm Format
  • Internal Stepping Motor
  • Direct Manual Focus
  • 7.8″ (0.2 m) Minimum Focus Distance
  • 3 Aspherical Lens Elements
  • Ultra-compact Design
  • Fits Sony NEX-mount Cameras

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The 20mm f/2.8 Alpha E-mount Lens from Sony is a compact 20mm prime lens for the Sony NEX line of APS-C sized mirrorless cameras. Its 35mm focal length equivalent is 30mm which classifies it as a wide-angle lens with multiple applications. Its maximum aperture of f/2.8 is bright enough for low-light capture and shallow depth of field imaging and its optical design consists of three aspherical elements which correct distortions and aberrations and provide clear, high contrast, detailed images. A smooth, quiet internal stepping motor is used for both focus drive and aperture actuation and makes this lens ideal for shooting video. Less than an inch long and built with aluminum alloy, it is both compact and durable. Autofocus and Direct Manual Focus, which allows for precise manual focus even in AF mode, is supported for both photo and video.

Wide-Angle Focal Length and Fast Aperture
Compact Aluminum Design
Image Quality
Smooth, Quiet Focus and Aperture Actuation
Direct Manual Focus
Circular Aperture
Package Weight 0.4 lbs
Package Dimensions 3.5 x 3.5 x 3.3 in
Focal Length

20mm Comparable 35mm Focal Length: 30 mm



Lens Type


Box Dimensions (LxWxH)

3.5 x 3.5 x 3.3″

Package Weight

0.4 lb


2.43 oz (69 g)

Dimensions (DxL)

Approx. 2.46 x 0.80″ (62.6 x 20.4 mm)

Filter Thread

Front:49 mm

Tripod Collar




Diaphragm Blades




Minimum Focus Distance

7.8″ (.20 m)

Format Compatibility

DSLR (APS-C Sensor)

Camera Mount Type

Sony (E Mount for NEX)

Image Stabilization



Maximum: f/2.8 Minimum: f/16

Focal Length Ranges


Lens Diameter



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