Minolta Sony A Prime

AF 20mm f/2.8

20mm
f/2.8
Prime
285 g
Min focus 0.25 m

Quick answer

The Minolta AF 20mm f/2.8 is a ultra-wide prime lens covering 20mm at f/2.8 for the Sony A mount. Its bright maximum aperture handles indoor and evening light reasonably well.

About this lens

Minolta AF 20mm f/2.8: a wide-angle prime lens with a 20mm focal length and a maximum aperture of f/2.8, made for Sony A mount cameras. The wide view suits landscapes, architecture and environmental shots.

Minolta AF 20mm f/2.8 specifications

Brand: Minolta
Mount: Sony A
Focal length: 20mm
Maximum aperture: f/2.8
Lens type: Prime
Format coverage: full-frame
Released: 1986
Optical construction: 10 elements in 9 groups
Aperture blades: 7
Autofocus motor: screw-drive
Minimum focus distance: 0.25 m
Maximum magnification: 0.13x
Filter thread: 72 mm
Weight: 285 g
Length: 53 mm

Specification source: dyxum.com

What can you shoot with the Minolta AF 20mm f/2.8?

At 20mm this is a ultra-wide prime, which typically suits:

Landscapes and big skies
Architecture and interiors
Astrophotography and night skies

Its bright maximum aperture handles indoor and evening light reasonably well.

Full-frame equivalent and field of view

Calculated from the focal length and crop factor. Not measured.

Sensor	Crop	Equivalent	Horizontal FOV	Diagonal FOV
Full frame	1.0x	20mm	84°	94.5°
APS-C	1.5x	30mm	61.9°	71.6°

Try the field-of-view calculator

Frequently asked questions

What mount does the Minolta AF 20mm f/2.8 use?

It uses the Sony A mount, so it fits Sony A cameras directly.

What is the focal length of the Minolta AF 20mm f/2.8?

It is a fixed 20mm lens with a maximum aperture of f/2.8. That makes it a ultra-wide lens.

Is the Minolta AF 20mm f/2.8 a prime or a zoom lens?

It is a prime lens with a fixed 20mm focal length. Primes usually open wider than zooms; this one opens to f/2.8.

What is the Minolta AF 20mm f/2.8 equivalent on a crop sensor?

On APS-C (1.5x crop) it frames like 30mm on full frame, with a 61.9° horizontal and 71.6° diagonal field of view. These figures are calculated from the focal length and crop factor.