Sony SAL-20F28 20mm f/2.8 AF Lens for Alpha & Minolta Maxxum Series

Model #SAL20F28

USA Version
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Dimensions (dxl) Approx. 2.11 x 3.07" (5.35 x 7.80 cm)
Weight 10.05 oz (285 g)
Filter thread Front: 72 mm


Groups/elements 9/10
Angle of view 94°
APS-C Picture Angle: 70°
Aperture Maximum: f/2.8
Minimum: f/22
Focal length 20 mm
Comparable APS-C Focal Length: 30 mm
Format compatibility 35mm Film / Full-Frame Digital Sensor
DSLR (APS-C Sensor)
Minimum focus distance 9.84" (24.99 cm)
Maximum reproduction ratio 1:7.69
Magnification 0.13x
Camera mount type Sony Alpha, Minolta AF
Diaphragm blades 7


Image stabilization No
Autofocus Yes
Tripod collar No
User Reviews
5 June 2017

I was disappointed with this lens. The sharpness, clarity and contrast are nowhere near as good as the Sony 16-35mm zoom lens. The only reason to buy a prime lens is to get better image quality than you can from a zoom.

20 March 2013

I purchased this lens for my a99 body for the purpose of capturing indoor photography of subjects (head to toe). I found my 50mm f1.4 and a CZ 85mm f1.4 lenses are both great in low light, but I find myself really constrained when trying to distance myself from my subject (especially in a 10x10...

  • +

    Corner Detail, DOF

  • -

    F2.8 not adequate for indoor shoots, AF

B h photo.34921152
29 July 2018

I had this lens on my wish list for a couple of years. Since I prefer prime lenses to zooms, this one fills the gap between my 14 mm ultra wide and my 30 mm wide-normal in my Sony A-mount (APS-C) kit. The images that I have gotten with it are acceptably sharp for my needs.

17 December 2017

I have a Minolta badged version of this lens and have used it extensively for landscape photography, time-lapse and also night photography. It takes filters, has a good just feels like a 'proper' old school lens - really like it. A robust lens.

  • +

    Consistent Output, Rugged, Sharp Focus, Strong Construction

  • -

    Slow Focus

2 March 2017

not as wide angle as expected. returned for that reason.

11 August 2015

great lens. i use it for northern lights photography and it works really well for capturing landscape.

B h photo.34921152
16 February 2015

Plan to use this during decent into magma chamber in Iceland

7 November 2014

It's not as sharp as I expected. I'm spoiled I guess. All of my lenses are ZEISS or Minolta/Sony G series. I have two lenses that are not ZEISS or G series. The Sony 16mm distorts the way I want. This is my least favorite lens due to quality, sharpness and vignette.

22 July 2014

My favorite lens - sharp, and excellent construction.

27 June 2014

Bought this lens recently for a77 and it looks fantastic. Picks up a great landscape shots with stunning DOF even at high speed. If you're looking to shoot fast in broad daylight odds are you will want to pick up an ND filter or two because 1/8000 of a second still leaves some pictures washed...

Product Highlights
  • Aperture Range: f/2.8-22
  • For Alpha & Minolta Maxxum DSLRs
  • Minimum Focus Distance: 9.8"
  • 7x Circular Aperture Blades
  • Rear Focusing System
  • Filter Diameter: 72mm
In The Box
  • Sony 20mm f/2.8 Wide Angle Prime Lens
  • Front Lens Cap
  • Rear Lens Cap
  • ALC-SH0013 Lens Hood for 20mm f/2.8 Lens
  • Limited 1-Year Warranty
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