Sigma Canon EF Wide Zoom

10-20mm f/4-5.6 EX DC HSM

10-20mm
f/4.0
Wide Zoom

Quick answer

The Sigma 10-20mm f/4-5.6 EX DC HSM is a ultra-wide wide zoom lens covering 10-20mm at f/4.0 for the Canon EF mount. Its moderate maximum aperture works best in good light or with a higher ISO.

About this lens

A 10-20mm f/4-5.6 APS-C wide-angle zoom lens, the Sigma 10-20mm f/4-5.6 EX DC HSM is designed for Canon EF mount bodies, with Hyper Sonic Motor autofocus. It covers wide angles for landscapes, interiors and architecture.

Sigma 10-20mm f/4-5.6 EX DC HSM specifications

Brand: Sigma
Mount: Canon EF
Focal length: 10-20mm
Maximum aperture: f/4.0
Lens type: Wide Zoom

What can you shoot with the Sigma 10-20mm f/4-5.6 EX DC HSM?

At 10-20mm this is a ultra-wide wide zoom, which typically suits:

Landscapes and big skies
Architecture and interiors
Astrophotography and night skies

Its moderate maximum aperture works best in good light or with a higher ISO.

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	10–20mm	84–121.9°	94.5–130.4°
APS-C	1.6x	16–32mm	58.7–96.7°	68.1–107°

Try the field-of-view calculator

Frequently asked questions

What mount does the Sigma 10-20mm f/4-5.6 EX DC HSM use?

It uses the Canon EF mount, so it fits Canon EF cameras directly.

What is the focal length of the Sigma 10-20mm f/4-5.6 EX DC HSM?

It zooms across 10-20mm with a maximum aperture of f/4.0. That makes it a ultra-wide lens.

Is the Sigma 10-20mm f/4-5.6 EX DC HSM a prime or a zoom lens?

It is a zoom lens covering 10-20mm, so you can reframe without moving. Its maximum aperture is f/4.0.

What is the Sigma 10-20mm f/4-5.6 EX DC HSM equivalent on a crop sensor?

On APS-C (1.6x crop) it frames like 16–32mm on full frame, with a 58.7–96.7° horizontal and 68.1–107° diagonal field of view. These figures are calculated from the focal length and crop factor.