It uses a Sony E-mount and is designed for the interchangeable-lens cropped-sensor Alpha mirrorless APS-C range. So cameras like the a6000, a6400, and a6600 — the same APS-C Alpha bodies that pair with lenses like the Sony 15mm f/1.4. (There’s also a 20mm f/1.8 designed for Sony’s full-frame cameras; I have sample images with that lens here.)
The 20mm focal length on the APS-C sensor is the equivalent of a 30mm perspective on a full-frame sensor. So it’s a moderately wide-angle perspective that makes for a versatile travel and street photography lens (helped by its fast maximum aperture).
But among its defining features are that it is so tiny and light. It weighs in at only 2.4 ounces (69 grams) and has a physical depth of less than an inch.
The angle of view is 70 degrees. It has a maximum aperture of f/2.8 and a minimum aperture of f/16.
And its optical design consists of six elements in six groups and seven rounded diaphragm blades. It takes 49mm screw-in filters. And it has aspherical lens elements; you can see the effects of that in some of the photos below, where straight lines are kept straight rather than getting the kind of distortion that you get with lenses that don’t use aspherical elements.
Sony E 20mm f/2.8 wide-angle lens sample images
Most of these were shot wide open at f/2.8. They were all shot on a Sony a6500.
You can click on each photo to open a full-size version if you’d like a closer look.
Price & availability
The technical product number is SEL20F28.
It takes 49mm screw-in filters.
