20 mm T1.9 ED AS UMC vs A 20 mm f/1.4 DG DN
Samyang
20 mm T1.9 ED AS UMC
Sigma
A 20 mm f/1.4 DG DN
Here we are comparing the Samyang 20 mm T1.9 ED AS UMC and the Sigma A 20 mm f/1.4 DG DN. The Samyang 20 mm T1.9 ED AS UMC is a 20mm wide-angle prime lens with a maximum aperture of f/1.8, released in 2016. The Sigma A 20 mm f/1.4 DG DN is a 20mm wide-angle prime lens with a maximum aperture of f/1.4, released in 2022.
There is a 6 years difference between the Samyang 20 mm T1.9 ED AS UMC and the Sigma A 20 mm f/1.4 DG DN — the newer design may benefit from more recent optical engineering and coatings.
Below you will find a detailed side-by-side comparison of their specifications, features, and key differences.
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| Compare | Lightest | Fastest Aperture |
|---|---|---|
| Mount | ||
| Sensor Size | Full Frame | Full Frame |
| Best For | Landscape Budget | Landscape |
Price & Availability | ||
| Shop | ||
Optical Specifications | ||
| Focal Length | 20 mm | 20 mm |
| Aperture | f/1.8 | f/1.4 |
| Aperture Blades | 7 | 11 |
Features | ||
| Autofocus | Yes | Yes |
| Image Stabilization | No | No |
| Weather Sealed | No | No |
Close-up Performance | ||
| Min. Focus Distance | 0.2 m | 0.23 m |
| Max. Magnification | - | - |
Physical Specifications | ||
| Weight | 508 g | 635 g |
| Length | 88.4 mm | 87.8 mm |
| Diameter | 83 mm | 111.2 mm |
| Filter Thread | 77 mm | 82 mm |
Price & Availability | ||
| Release Year | 2016 | 2022 |
| Shop | ||
Shopping links may contain affiliate codes that support this site at no extra cost to you.
Comparing Samyang 20 mm T1.9 ED AS UMC (20 mm, f/1.8) and Sigma A 20 mm f/1.4 DG DN (20 mm, f/1.4).
Samyang 20 mm T1.9 ED AS UMC is the lightest at 508 g, Sigma A 20 mm f/1.4 DG DN weighs 635 g.
Sigma A 20 mm f/1.4 DG DN offers the fastest maximum aperture at f/1.4, allowing for better low-light performance and shallower depth of field.
Samyang 20 mm T1.9 ED AS UMC can focus closest at 0.2 m minimum focus distance.
Use the detailed comparison table below to see all specifications side-by-side and find the perfect lens for your photography needs.
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