Lens Details
Sigma
20mm f/2 DG DN Contemporary (L-mount)
$549~
MSRP (prices vary)
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Released: September 24, 2021
Highlights
- Full-frame 20mm f/2 ultra-wide prime for L-Mount, ideal for sweeping vistas and tight interiors.
- A fast f/2 maximum aperture gives smooth background blur and excellent low-light reach.
- Weather-sealed against dust and moisture, a dedicated aperture ring for video and manual control, and it is lightweight at 370g.
Who it's for
The Sigma 20mm f/2 DG DN Contemporary (L-mount) is a 20mm f/2 prime lens — a wide-angle option. Here's what it's best at and what to keep in mind.
Best for
- ✓Low light and subject separation — a fast f/2 aperture.
- ✓Landscapes, interiors and architecture — a wide 20mm field of view.
- ✓Outdoor and travel use — a weather-sealed build.
20mm
Focal Length
f/2
Max Aperture
Full-Frame
Coverage
−
Stabilized
370g
Weight
67mm
Filter
Full Specifications
Optical Design
| Focal Length | 20mm |
|---|---|
| Lens Type | Prime |
| Optical Elements | 13 |
| Optical Groups | 11 |
Aperture & Iris
| Maximum Aperture | f/2 |
|---|---|
| Minimum Aperture | f/16 |
| Aperture Blades | 9 |
| Rounded Aperture | Yes |
Coverage & Angle
| Format Coverage | Full-Frame |
|---|---|
| Lens Mount | L-Mount |
| Angle of View | 94° |
| 35mm Equivalent | − |
Focus
| Autofocus | Yes |
|---|---|
| Focus Motor | HLA |
| Focus Limiter | No |
| AF/MF Switch | Yes |
| Min Focus Distance | 22 cm |
| Max Magnification | 0.19x |
Stabilization & Video
| Optical Stabilization | No |
|---|---|
| Aperture Ring | Yes |
| Declickable Aperture | Yes |
| Parfocal | No |
| Internal Zoom | No |
General
| Price (MSRP) | $549 |
|---|---|
| Filter Size | 67mm |
| Diameter | 74.8mm |
| Length | 90.5mm |
| Weight | 370g (13.1 oz) |
| Weather Sealed | Yes |
| Tripod Collar | No |
