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Sony 20mm f/2.8 Wide Angle Prime Lens


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Manufacturer # SAL20F28

Our Stock # SYSAL20F28

  • Prime lens with a focal length of 20mm (30mm when mounted on an APS-C DSLR)

  • Fast maximum aperture of f/2.8

  • 10 lens elements arranged in 9 groups

  • Minimum focusing distance of 9.6”

  • 7-blade circular aperture diaphragm

  • Weighs 285 grams


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20mm f/2.8 Wide Angle Prime Lens is a fast prime designed to work on both a full frame 35mm and an APS-C cropped DSLR with a focal length of 20mm on the former and 30mm on the later making it suitable for landscape, interior and other wide angle shots. It has a fast f/2.8 maximum aperture and a 7-blade circular aperture diaphragm. The lens construction includes 10 elements arranged in 9 groups.


Lens Type :

Wide Angle & Wide Angle Zoom

Aperture (Max.) :


Aperture (Min.) :


Focal Length (35mm equivalent) :

APS: 30mm (35mm Equivalent: 20mm)

Filter Diameter :


Lens Groups-Elements :

9 groups, 10 elements

Minimum Focus Distance :

9.6” (25cm)

Aperture Blade :

7 blades (Circular aperture)

Aspheric Elements :

no aspheric

Depth-of-Field :


Distance Scale :


Lens Weight :

10 oz (285g)

Magnification :

x 0.13

Weights and Measurements

Dimensions (Approx.) :

3 1/8 x 2 1/8” (78 x 53.5mm)

Weight (Approx.) :

10 oz (285g)

  • Front and rear lens cap

  • ALC-SH0013 petal lens hood