Photo: Henry Söderlund (CC BY 2.0)
40mm f/1.4 DG HSM Art
- 40mm
- f/1.4
- Prime
- Min focus 0.4 m
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Quick answer
The Sigma 40mm f/1.4 DG HSM Art is a standard prime lens covering 40mm at f/1.4 for the Canon EF mount. Its very wide maximum aperture suits low light and shallow depth of field with strong background blur.
About this lens
A 40mm f/1.4 full-frame fast standard prime lens, the Sigma 40mm f/1.4 DG HSM Art is designed for Canon EF mount bodies, from the Sigma Art line with Hyper Sonic Motor autofocus. The natural field of view suits street, documentary and everyday photography.
Sigma 40mm f/1.4 DG HSM Art specifications
- Brand
- Sigma
- Mount
- Canon EF
- Focal length
- 40mm
- Maximum aperture
- f/1.4
- Lens type
- Prime
- Format coverage
- full-frame
- Optical construction
- 16 elements in 12 groups
- Aperture blades
- 9
- Autofocus motor
- HSM
- Minimum focus distance
- 0.4 m
- Maximum magnification
- 0.15x
- Filter thread
- 82 mm
- Length
- 131 mm
- Diameter
- 87.8 mm
Specification source: sigmaphoto.com
What can you shoot with the Sigma 40mm f/1.4 DG HSM Art?
At 40mm this is a standard prime, which typically suits:
- Everyday and street photography
- Natural-perspective portraits
- Documentary and travel work
Its very wide maximum aperture suits low light and shallow depth of field with strong background blur.
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 | 40mm | 48.5° | 56.8° |
| APS-C | 1.6x | 64mm | 31.4° | 37.4° |
Frequently asked questions
What mount does the Sigma 40mm f/1.4 DG HSM Art use?
It uses the Canon EF mount, so it fits Canon EF cameras directly.
What is the focal length of the Sigma 40mm f/1.4 DG HSM Art?
It is a fixed 40mm lens with a maximum aperture of f/1.4. That makes it a standard lens.
Is the Sigma 40mm f/1.4 DG HSM Art a prime or a zoom lens?
It is a prime lens with a fixed 40mm focal length. Primes usually open wider than zooms; this one opens to f/1.4.
What is the Sigma 40mm f/1.4 DG HSM Art equivalent on a crop sensor?
On APS-C (1.6x crop) it frames like 64mm on full frame, with a 31.4° horizontal and 37.4° diagonal field of view. These figures are calculated from the focal length and crop factor.
Which cameras does the Sigma 40mm f/1.4 DG HSM Art fit?
Any Canon EF-mount camera, including Canon EOS 1D X, Canon EOS 5D, Canon EOS 5D Mark II, Canon EOS 5D Mark III, and Canon EOS 5D Mark IV and 7 more.
Alternatives for Canon EF from other brands
All Canon EF lensesSame mount, overlapping focal range, closest maximum aperture first.
