Sigma Contemporary 20mm f/2 DG 20mm
The f/2 maximum aperture and 13-element optical design with aspherical and ED glass deliver strong low-light performance and sharpness in a compact 370g body. Its all-metal, weather-sealed I Series construction and tactile aperture ring provide a premium handling experience rare at this size. This lens is best for environmental portrait and astrophotography shooters who need a fast, ultra-wide prime that won't weigh down a kit.
Snapshot
Pros & Cons
Pros
- Strong bokeh (92nd percentile) 92nd
- Strong aperture (90th percentile) 90th
- Strong optical (84th percentile) 84th
- Strong macro (79th percentile) 79th
Cons
- Below average social proof (6th percentile)
- Below average versatility (34th percentile)
What owners think
How owner sentiment changed over time
ExclusiveBased on when customers actually wrote their reviews - so you can see whether early praise held up.
Based on 5 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Optics
| Type | Prime |
| Focal Length Min | 20 |
| Focal Length Max | 20 |
| Elements | 13 |
| Groups | 11 |
| Aspherical Elements | 3 |
| ED Elements | 2 |
| Coating | Super Multi-Layer Coating and Nano Porous Coating (NPC) |
Aperture
| Max Aperture | f/2 |
| Min Aperture | f/2 |
| Constant | Yes |
| Diaphragm Blades | 9 |
Build
| Mount | Sony E |
| Format | full-frame |
| Weather Sealed | Yes |
| Weight | 0.4 kg / 0.8 lbs |
| Filter Thread | 62 |
AF & Stabilization
| AF Type | Autofocus |
| Stabilization | No |
Focus
| Min Focus Distance | 220 |
| Max Magnification | 1:6.67 |
vs Competition
| Spec | Sigma Contemporary 20mm f/2 DG 20mm | Altura Photo NIKKOR 55MM 0.43x HD Wide Angle | GoPro HB-Series AEWAL-001 | Digitalmate Platinum Series DM5843X | XuanLens 32mm F10 Free Focus Pancake | Serounder 52mm Fisheye |
|---|---|---|---|---|---|---|
| Focal Length | 20mm | - | - | 58mm | 32mm | 52mm |
| Max Aperture | f/2 | f/3.5 | f/0 | - | f/10 | - |
| Mount | Sony E | Screw-on lens fits camera lenses with a 55mm front filter thread | GoPro HERO Black Mount | Canon EF | Canon RF | Multiple |
| Stabilization | false | true | true | true | true | true |
| Weather Sealed | true | false | true | false | false | false |
| Weight (g) | 370 | 320 | - | 306 | 35 | 230 |
| AF Type | Autofocus | STM | - | Auto Focus | manual focus only | - |
| Lens Type | prime | wide-angle | wide-angle | wide-angle | wide-angle | fisheye |
| Compare | Compare | Compare | Compare | Compare |
| Product | AF | Bokeh | Build | Macro | Optical | Aperture | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|
| Sigma Contemporary 20mm f/2 DG 20mm | 54.7 | 92.2 | 77.4 | 79 | 83.5 | 90 | 5.6 | 35.6 |
| Altura Photo NIKKOR 55MM 0.43x HD Wide Angle Compare | 85.5 | 75 | 68.4 | 95.7 | 33.8 | 77 | 68.2 | 80.5 |
| GoPro HB-Series AEWAL-001 Compare | 54.7 | 100 | 55.2 | 7.9 | 33.8 | 100 | 75.5 | 80.5 |
| Digitalmate Platinum Series DM5843X Compare | 54.7 | 69.8 | 70.3 | 89.8 | 33.8 | 71.5 | 66.5 | 80.5 |
| XuanLens 32mm F10 Free Focus Pancake Compare | 15.3 | 54.5 | 99.8 | 97.5 | 15.1 | 60.7 | 70.9 | 80.5 |
| Serounder 52mm Fisheye Compare | 54.7 | 69.8 | 79.2 | 89.2 | 27.9 | 71.5 | 9.2 | 80.5 |
Price
Value & Pricing
Amazon.fr 1 offer From €13
We started tracking prices for this product on May 7, 2026. The chart appears once we have more data.
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
