Weight
520 g
Sigma 20mm F1.8 EX DG ASP RF features f/1.8 main camera.
General info
| Lens type i | Prime, Wide-angle (69 others) |
| Lens mount i | Canon EFSigma 20mm F1.8 EX DG ASP RF |
| Has A Metal Mount i | ✔ (634 others) |
| Weight i | 520 g (3 others) |
| Includes Lens Hood i | ✔ (649 others) |
Optics
| Maximum focal length i | 20 mm (20 others) |
| Minimum focal length i | 20 mm (21 others) |
| Has built in optical image stabilization i | ✖ |
| Maximum angle of view i | 94.5° (2 others) |
| Minimum angle of view i | 94.5° (2 others) |
| Magnification i | 0.25x (35 others) |
| Optical zoom i | 1x (417 others) |
Aperture
| Wide aperture (main camera) i | f/1.8 (72 others) |
| Widest aperture at maximum focal length i | f/1.8 (72 others) |
| Aperture blades i | 9 (384 others) |
| Smallest aperture at maximum focal length i | f/20.0 (1 other) |
| Smallest aperture at minimum focal length i | f/20.0 (1 other) |
Focus
| Can Focus To Infinity i | ✔ (702 others) |
| Has Focus Motor i | ✔ (698 others) |
| Has full time manual focus i | ✔ (642 others) |
| Minimum focus distance i | 0.2 m (51 others) |
Benchmarks
| Sharpness result i | 10 P-MPix (23 others) |
| Chromatic aberration i | 7 µm (23 others) |
| Dxomark score i | 18 (19 others) |
| Distortion i | 0.6% (10 others) |
| Transmission i | 2.1 TStop (8 others) |
| Vignetting i | -1 (12 others) |
Similar products
Frequently Asked Questions
What is the maximum focal length of the Sigma 20mm F1.8 EX DG ASP RF?
At 20 mm, the Sigma 20mm F1.8 EX DG ASP RF is 83% below the category average for maximum focal length, ranking #710 out of 817 — see ranking camera lens products.
What is the minimum focal length of the Sigma 20mm F1.8 EX DG ASP RF?
At 20 mm, the Sigma 20mm F1.8 EX DG ASP RF is 68% below the category average for minimum focal length, ranking #547 out of 817 — see ranking camera lens products.
What is the minimum focus distance of the Sigma 20mm F1.8 EX DG ASP RF?
At 0.2 m, the Sigma 20mm F1.8 EX DG ASP RF is 67% below the category average for minimum focus distance, ranking #663 out of 811 — see ranking camera lens products.
What is the optical zoom of the Sigma 20mm F1.8 EX DG ASP RF?
At 1x, the Sigma 20mm F1.8 EX DG ASP RF is 60% below the category average for optical zoom, ranking #360 out of 781 — see ranking camera lens products.
What is the distortion of the Sigma 20mm F1.8 EX DG ASP RF?
At 0.6%, the Sigma 20mm F1.8 EX DG ASP RF is 43% above the category average for distortion, ranking #32 out of 229 — see ranking camera lens products.
How heavy is the Sigma 20mm F1.8 EX DG ASP RF?
At 520 g, the Sigma 20mm F1.8 EX DG ASP RF is 39% above the category average for weight, ranking #571 out of 815 — see ranking camera lens products.
What is the transmission of the Sigma 20mm F1.8 EX DG ASP RF?
At 2.1 TStop, the Sigma 20mm F1.8 EX DG ASP RF is 39% below the category average for transmission, ranking #175 out of 255 — see ranking camera lens products.
What is the sharpness result of the Sigma 20mm F1.8 EX DG ASP RF?
At 10 P-MPix, the Sigma 20mm F1.8 EX DG ASP RF is 36% below the category average for sharpness result, ranking #134 out of 258 — see ranking camera lens products.
What is the dxomark score of the Sigma 20mm F1.8 EX DG ASP RF?
At 18, the Sigma 20mm F1.8 EX DG ASP RF is 24% below the category average for dxomark score, ranking #152 out of 257 — see ranking camera lens products.
What is the magnification of the Sigma 20mm F1.8 EX DG ASP RF?
At 0.25x, the Sigma 20mm F1.8 EX DG ASP RF is 23% below the category average for magnification, ranking #222 out of 768 — see ranking camera lens products.
What is the chromatic aberration of the Sigma 20mm F1.8 EX DG ASP RF?
At 7 µm, the Sigma 20mm F1.8 EX DG ASP RF is 21% below the category average for chromatic aberration, ranking #138 out of 254 — see ranking camera lens products.
Does the Sigma 20mm F1.8 EX DG ASP RF have optical image stabilization (OIS)?
No, the Sigma 20mm F1.8 EX DG ASP RF does not have OIS. This feature is available in 37% of camera lenses.
How does it compare?
How does the Sigma 20mm F1.8 EX DG ASP RF's weight compare to similar camera lensess?
At 520 g, the Sigma 20mm F1.8 EX DG ASP RF trails the Sony FE 70-200mm f/2.8 GM OSS II (1.04 kg) by 100%.
How does the Sigma 20mm F1.8 EX DG ASP RF's maximum focal length compare to similar camera lensess?
At 20 mm, the Sigma 20mm F1.8 EX DG ASP RF trails the Sony FE 70-200mm f/2.8 GM OSS II (200 mm) by 90%.
How does the Sigma 20mm F1.8 EX DG ASP RF's distortion compare to similar camera lensess?
At 0.6%, the Sigma 20mm F1.8 EX DG ASP RF leads the Tamron SP 90mm F2.8 Di Macro 1:1 VC USD (0.1%) by 83%.
How does the Sigma 20mm F1.8 EX DG ASP RF's sharpness result compare to similar camera lensess?
At 10 P-MPix, the Sigma 20mm F1.8 EX DG ASP RF trails the Sony FE 70-200mm f/2.8 GM OSS II (53 P-MPix) by 81%.
How does the Sigma 20mm F1.8 EX DG ASP RF's minimum focus distance compare to similar camera lensess?
At 0.2 m, the Sigma 20mm F1.8 EX DG ASP RF trails the Sony FE 70-200mm F2.8 GM OSS (0.96 m) by 79%.
How does the Sigma 20mm F1.8 EX DG ASP RF's minimum focal length compare to similar camera lensess?
At 20 mm, the Sigma 20mm F1.8 EX DG ASP RF trails the Tamron SP 90mm F2.8 Di Macro 1:1 VC USD (90 mm) by 78%.
How does the Sigma 20mm F1.8 EX DG ASP RF's magnification compare to similar camera lensess?
At 0.25x, the Sigma 20mm F1.8 EX DG ASP RF trails the Tamron SP 90mm F2.8 Di Macro 1:1 VC USD (1x) by 75%.
How does the Sigma 20mm F1.8 EX DG ASP RF's optical zoom compare to similar camera lensess?
At 1x, the Sigma 20mm F1.8 EX DG ASP RF trails the Sony FE 70-200mm f/2.8 GM OSS II (2.9x) by 66%.
How does the Sigma 20mm F1.8 EX DG ASP RF's dxomark score compare to similar camera lensess?
At 18, the Sigma 20mm F1.8 EX DG ASP RF trails the Tamron SP 85mm F1.8 Di VC USD (46) by 61%.
How does the Sigma 20mm F1.8 EX DG ASP RF's chromatic aberration compare to similar camera lensess?
At 7 µm, the Sigma 20mm F1.8 EX DG ASP RF leads the Sony FE 70-200mm f/2.8 GM OSS II (3 µm) by 57%.
How does the Sigma 20mm F1.8 EX DG ASP RF's transmission compare to similar camera lensess?
At 2.1 TStop, the Sigma 20mm F1.8 EX DG ASP RF trails the Tamron SP 90mm F2.8 Di Macro 1:1 VC USD (3.2 TStop) by 34%.
How does the Sigma 20mm F1.8 EX DG ASP RF's aperture blades compare to similar camera lensess?
At 9, the Sigma 20mm F1.8 EX DG ASP RF trails the Sony FE 70-200mm f/2.8 GM OSS II (11) by 18%.