20 mm T1.9 ED AS UMC vs 20 mm f/1.8 EX DG Aspherical RF
Samyang
20 mm T1.9 ED AS UMC
Sigma
20 mm f/1.8 EX DG Aspherical RF
Shopping links may contain affiliate codes that support this site at no extra cost to you.
| Compare | Lightest | |
|---|---|---|
| Mount | ||
| Sensor Size | Full Frame | Full Frame |
| Best For | Landscape | Landscape |
Price & Availability | ||
| Shop | ||
Optical Specifications | ||
| Focal Length | 20 mm | 20 mm |
| Aperture | f/1.8 | f/1.8 |
| Aperture Blades | 7 | 9 |
Features | ||
| Autofocus | Yes | Yes |
| Image Stabilization | No | No |
| Weather Sealed | No | No |
Close-up Performance | ||
| Min. Focus Distance | 0.2 m | 0.2 m |
| Max. Magnification | - | - |
Physical Specifications | ||
| Weight | 508 g | 520 g |
| Length | 88.4 mm | 87 mm |
| Diameter | 83 mm | 88.5 mm |
| Filter Thread | 77 mm | 82 mm |
Price & Availability | ||
| Release Year | 2016 | 2000 |
| 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 20 mm f/1.8 EX DG Aspherical RF (20 mm, f/1.8).
Samyang 20 mm T1.9 ED AS UMC is the lightest at 508 g, Sigma 20 mm f/1.8 EX DG Aspherical RF weighs 520 g.
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.
Discover the best lenses for your camera mount and photography style
Top-rated Micro Four Thirds lenses optimized for Landscape Photography
Top-rated Sony E lenses optimized for Landscape Photography
Top-rated Canon EF-M lenses optimized for Landscape Photography
Explore all curated lens recommendations by mount and photography type
Here we are comparing the Samyang 20 mm T1.9 ED AS UMC and the Sigma 20 mm f/1.8 EX DG Aspherical RF. 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 20 mm f/1.8 EX DG Aspherical RF is a 20mm wide-angle prime lens with a maximum aperture of f/1.8, released in 2000.
There is a 16 years difference between the Sigma 20 mm f/1.8 EX DG Aspherical RF and the Samyang 20 mm T1.9 ED AS UMC — 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.
