12-24mm f/4 DG HSM Art

12-24mm
f/4.0
Wide Zoom
Min focus 0.24 m

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Quick answer

An ultra-wide zoom for full-frame DSLRs with a constant f/4 aperture. It has a bulbous front element without a screw-in filter thread and focuses as close as 0.24 m.

Pros

Very wide 12mm end
Constant f/4
Close focus 0.24 m
HSM autofocus

Cons

No front filter thread
Slower than f/2.8 zooms
Large for an ultra-wide zoom

Verdict

A useful ultra-wide for DSLR landscape shooters. Filters require a special holder.

About this lens

Sigma 12-24mm f/4 DG HSM Art: a full-frame wide-angle zoom lens with a 12-24mm focal length and a maximum aperture of f/4, made for Canon EF mount cameras, from the Sigma Art line with Hyper Sonic Motor autofocus. It covers wide angles for landscapes, interiors and architecture.

Sigma 12-24mm f/4 DG HSM Art specifications

Brand: Sigma
Mount: Canon EF
Focal length: 12-24mm
Maximum aperture: f/4.0
Lens type: Wide Zoom
Format coverage: full-frame
Optical construction: 16 elements in 11 groups
Aperture blades: 9
Autofocus motor: HSM
Minimum focus distance: 0.24 m
Maximum magnification: 0.2x
Length: 131.5 mm
Diameter: 102 mm

Specification source: sigmaphoto.com

What can you shoot with the Sigma 12-24mm f/4 DG HSM Art?

Landscapes and architecture
Real estate interiors
Astrophotography

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	12–24mm	73.7–112.6°	84.1–122°
APS-C	1.6x	19–38mm	50.2–86.3°	58.8–96.8°

Try the field-of-view calculator

Frequently asked questions

Can filters be used on the Sigma 12-24mm f/4 Art?

Not on the front. The bulbous front element has no filter thread, so you need a dedicated filter system.

How wide is 12mm on full frame?

Roughly a 122-degree angle of view, which exaggerates perspective strongly.

How close does the Sigma 12-24mm f/4 Art focus?

Minimum focus is 0.24 m, with a maximum magnification of 0.2x. The distance is measured from the sensor plane, so the working distance in front of the lens is shorter.