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

Model #SAL20F28

Sony Warranty - 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
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.

18 July 2014

The reason I purchased this lens was for landscape and architectural shoots. I purchased the lens a few days before the 4th of July. I used this lens with my a77 along with the 16-50 kit lens on my a7 for that evening, alternating shots during the fireworks display.

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.

B h photo.34921152
27 April 2010

I bought a Sony A850 body and needed some lenses and this (20mm F2.8 Sony) was the first one. I have had the Nikon and Canon counterparts. This is the best of the three for sure. They all seem to have some things in common.

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.

B h photo.34921152
2 July 2010

This is a great lens to travel lightly with and always stays in my to go bag when heading out the door. Very sharp when stopped down a stop or two and focus speed is a non-issue. The only down side is it lacks the distance information for Sony's flash system.

24 December 2011

I use this lens on an Alpha 850, and it's ideal for interior and exterior architecture as well as landscape. I should have purchased this lens rather than Sony's 16mm fisheye. The 16mm is fun, but the distortion only fits certain scenes and warp correction in Photoshop has its limits.

B h photo.34921152
11 May 2010

I use the lens for landscape shots, and some street shots for greater perspective/context. It focusses quickly and sharply. I am amazed by the night-time shots. Very sharp and fast focus! Watch out for an effect that I have learned is common to most super wide angle lenses.

11 August 2015

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

B h photo.34921152
7 September 2008

Probably the best panoramic choice on Sony Alpha mount, I'm extremely satisfied with it's saturation and sharpness. Used Tamron 17-50 and Sony 11-17 lens, incomparable to this one.

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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