Sigma Sony A Zoom

28-70mm f/2.8 AF

28-70mm
f/2.8
Zoom

Quick answer

The Sigma 28-70mm f/2.8 AF is a wide-angle to standard zoom lens covering 28-70mm at f/2.8 for the Sony A mount. Its bright maximum aperture handles indoor and evening light reasonably well.

About this lens

This 28-70mm f/2.8 fast standard zoom lens from Sigma fits Sony A mount cameras. The range covers everything from wide scenes to portraits, so it works as a general-purpose lens.

Sigma 28-70mm f/2.8 AF specifications

Brand: Sigma
Mount: Sony A
Focal length: 28-70mm
Maximum aperture: f/2.8
Lens type: Zoom

What can you shoot with the Sigma 28-70mm f/2.8 AF?

At 28-70mm this is a wide-angle to standard zoom, which typically suits:

Landscapes and cityscapes
Street and travel photography
Environmental portraits and interiors
Everyday and street photography
Natural-perspective portraits

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	28–70mm	28.8–65.5°	34.3–75.4°
APS-C	1.5x	42–105mm	19.5–46.4°	23.3–54.5°

Try the field-of-view calculator

Frequently asked questions

What mount does the Sigma 28-70mm f/2.8 AF use?

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

What is the focal length of the Sigma 28-70mm f/2.8 AF?

It zooms across 28-70mm with a maximum aperture of f/2.8. That makes it a wide-angle to standard lens.

Is the Sigma 28-70mm f/2.8 AF a prime or a zoom lens?

It is a zoom lens covering 28-70mm, so you can reframe without moving. Its maximum aperture is f/2.8.

What is the Sigma 28-70mm f/2.8 AF equivalent on a crop sensor?

On APS-C (1.5x crop) it frames like 42–105mm on full frame, with a 19.5–46.4° horizontal and 23.3–54.5° diagonal field of view. These figures are calculated from the focal length and crop factor.