Photo: Henry Söderlund (CC BY 2.0)
Quick answer
The Sigma 17mm F4 DG DN | Contemporary 023 is a ultra-wide prime lens covering 17mm at f/4.0 for the Leica L mount. Its moderate maximum aperture works best in good light or with a higher ISO.
About this lens
A 17mm f/4 full-frame wide-angle prime lens, the Sigma 17mm F4 DG DN | Contemporary 023 is designed for Leica L mount bodies, from the Sigma Contemporary line. The wide view suits landscapes, architecture and environmental shots.
Sigma 17mm F4 DG DN | Contemporary 023 specifications
- Brand
- Sigma
- Mount
- Leica L
- Focal length
- 17mm
- Maximum aperture
- f/4.0
- Lens type
- Prime
- Format coverage
- full-frame
- Optical construction
- 9 elements in 8 groups
- Aperture blades
- 7
- Autofocus motor
- Stepping motor
- Minimum focus distance
- 0.12 m
- Maximum magnification
- 0.28x
- Filter thread
- 55 mm
- Weight
- 225 g
- Length
- 48.8 mm
- Diameter
- 64 mm
Specification source: sigmaphoto.com
What can you shoot with the Sigma 17mm F4 DG DN | Contemporary 023?
At 17mm this is a ultra-wide prime, 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 | 17mm | 93.3° | 103.7° |
| APS-C | 1.5x | 26mm | 70.4° | 80.6° |
Frequently asked questions
What mount does the Sigma 17mm F4 DG DN | Contemporary 023 use?
It uses the Leica L mount, so it fits Leica L cameras directly.
What is the focal length of the Sigma 17mm F4 DG DN | Contemporary 023?
It is a fixed 17mm lens with a maximum aperture of f/4.0. That makes it a ultra-wide lens.
Is the Sigma 17mm F4 DG DN | Contemporary 023 a prime or a zoom lens?
It is a prime lens with a fixed 17mm focal length. Primes usually open wider than zooms; this one opens to f/4.0.
What is the Sigma 17mm F4 DG DN | Contemporary 023 equivalent on a crop sensor?
On APS-C (1.5x crop) it frames like 26mm on full frame, with a 70.4° horizontal and 80.6° diagonal field of view. These figures are calculated from the focal length and crop factor.
Which cameras does the Sigma 17mm F4 DG DN | Contemporary 023 fit?
Any Leica L-mount camera, including Leica SL (Typ 601), Leica SL2, Leica SL2-S, Leica SL3, and Panasonic Lumix DC-S1 and 7 more.
Alternatives for Leica L from other brands
All Leica L lensesSame mount, overlapping focal range, closest maximum aperture first.
