12-24mm f/4.5-5.6 EX DG Aspherical HSM

12-24mm
f/4.5
Wide Zoom

Quick answer

The Sigma 12-24mm f/4.5-5.6 EX DG Aspherical HSM is a ultra-wide to wide-angle wide zoom lens covering 12-24mm at f/4.5 for the Sigma SA mount. Its smaller maximum aperture favours daylight shooting and keeps the lens compact.

About this lens

This 12-24mm f/4.5-5.6 full-frame wide-angle zoom lens from Sigma fits Sigma SA mount cameras, with Hyper Sonic Motor autofocus and aspherical elements. It covers wide angles for landscapes, interiors and architecture.

Sigma 12-24mm f/4.5-5.6 EX DG Aspherical HSM specifications

Brand: Sigma
Mount: Sigma SA
Focal length: 12-24mm
Maximum aperture: f/4.5
Lens type: Wide Zoom

What can you shoot with the Sigma 12-24mm f/4.5-5.6 EX DG Aspherical HSM?

At 12-24mm this is a ultra-wide to wide-angle wide zoom, which typically suits:

Landscapes and big skies
Architecture and interiors
Astrophotography and night skies
Landscapes and cityscapes
Street and travel photography

Its smaller maximum aperture favours daylight shooting and keeps the lens compact.

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	12–24mm	73.7–112.6°	84.1–122°
APS-C	1.5x	18–36mm	53.1–90°	62–100.5°

Try the field-of-view calculator

Frequently asked questions

What mount does the Sigma 12-24mm f/4.5-5.6 EX DG Aspherical HSM use?

It uses the Sigma SA mount, so it fits Sigma SA cameras directly.

What is the focal length of the Sigma 12-24mm f/4.5-5.6 EX DG Aspherical HSM?

It zooms across 12-24mm with a maximum aperture of f/4.5. That makes it a ultra-wide to wide-angle lens.

Is the Sigma 12-24mm f/4.5-5.6 EX DG Aspherical HSM a prime or a zoom lens?

It is a zoom lens covering 12-24mm, so you can reframe without moving. Its maximum aperture is f/4.5.

What is the Sigma 12-24mm f/4.5-5.6 EX DG Aspherical HSM equivalent on a crop sensor?

On APS-C (1.5x crop) it frames like 18–36mm on full frame, with a 53.1–90° horizontal and 62–100.5° diagonal field of view. These figures are calculated from the focal length and crop factor.