Comparison of Sigma 20mm f/1.8 EX DG Aspherical RF and Sigma 24mm ƒ/1.8 EX DG Aspherical Macro [S]ave
| Attribute |  Sigma 20mm f/1.8 EX DG Aspherical RF × |  Sigma 24mm ƒ/1.8 EX DG Aspherical Macro × |
|---|---|---|
| Aperture (f) | 1.80 - 22.00 | 1.80 - 22.00 |
| Filter Size (mm) | 82 | 77 |
| Notes | Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax | Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax, Four-Thirds |
| Closest Focus (m) | 0.2 | 0.18 |
| Magnification Ratio (x) | 0.25 | 0.37 |
| Type | Wide Prime | Wide Prime |
| Focus Details | Internal (Rear Focus) with Dual Focus mechanism | Dual Focus mechanism |
| APS Equivalent | 1.5x: 30mm; 1.6x: 32mm | 1.5x: 36mm; 1.6x: 38.4mm |
| Diaphragm Blades | 9 | 9 |
| Image Circle | 35mm | 35mm |
| Focal Length (mm) | 20.00 | 24.00 |
| Brand | Sigma | Sigma |
| Name | Sigma 20mm f/1.8 EX DG Aspherical RF | Sigma 24mm ƒ/1.8 EX DG Aspherical Macro |
| Weight (g) | 520 | 485 |
| Diagonal Angle of View (degree) | 94.50 | 84.10 |
| Length (mm) | 89.5 | 82.5 |
| Diameter (mm) | 88.6 | 83.6 |
| Lens Construction | 13 elements in 11 groups, including 2 aspherical elements | 10 elements in 9 groups, including 2 aspherical elements |
Help · Contact us · Disclaimer · Contributors · Developers · Donate