Sigma Leica L mount Ultra-wide prime
Sigma 20mm f/2 DG DN Contemporary
Quick answer
The Sigma 20mm f/2 DG DN Contemporary is a ultra-wide prime lens covering 20mm at f/2.0 for the Leica L mount. Its fast maximum aperture helps in dim light and gives good subject separation.
- Full frame
- APS-C (30mm equiv.)
- 22 Leica L cameras
- Focal
- 20mm
- Aperture
- f/2–22
- Weight
- 370g
- Filter
- 62mm
- Min focus
- 0.22m
What 20mm sees
- Full frame crop 1.0×
- 94.5° 84° horizontal
- APS-C crop 1.5× → 30mm
- 71.6° 61.9° horizontal
Diagonal angle of view. Frames drawn to scale at 20mm. Calculated from the focal length and crop factor, not measured.
Open the field-of-view calculatorSigma 20mm f/2 DG DN Contemporary specifications
Optics
- Focal length
- 20mm
- Maximum aperture
- f/2.0
- Minimum aperture
- f/22
- Format coverage
- Full frame
- Optical construction
- 13 elements in 11 groups
- Aperture blades
- 9
Focus
- Minimum focus distance
- 0.22 m
- Maximum magnification
- 0.15×
Physical
- Filter thread
- 62 mm
- Weight
- 370 g
- Length
- 72.4 mm
- Diameter
- 70 mm
Specification source: sigma-global.com
What can you shoot with the Sigma 20mm f/2 DG DN Contemporary?
At 20mm this is a ultra-wide prime, which typically suits:
- Landscapes and big skies
- Architecture and interiors
- Astrophotography and night skies
Its fast maximum aperture helps in dim light and gives good subject separation.
Frequently asked questions
What mount does the Sigma 20mm f/2 DG DN Contemporary use?
It uses the Leica L mount, so it fits Leica L cameras directly.
What is the focal length of the Sigma 20mm f/2 DG DN Contemporary?
It is a fixed 20mm lens with a maximum aperture of f/2.0. That makes it a ultra-wide lens.
Is the Sigma 20mm f/2 DG DN Contemporary a prime or a zoom lens?
It is a prime lens with a fixed 20mm focal length. Primes usually open wider than zooms; this one opens to f/2.0.
What is the Sigma 20mm f/2 DG DN Contemporary equivalent on a crop sensor?
On APS-C (1.5x crop) it frames like 30mm on full frame, with a 61.9° horizontal and 71.6° diagonal field of view. These figures are calculated from the focal length and crop factor.
Which cameras does the Sigma 20mm f/2 DG DN Contemporary fit?
Any Leica L-mount camera, including Leica SL (Typ 601), Leica SL2, Leica SL2-S, Leica SL3, and Panasonic Lumix DC-S1 and 17 more.
Alternatives for Leica L from other brands
All Leica L lensesSame mount, overlapping focal range, closest maximum aperture first.
