Comparison of Sigma 24mm ƒ/1.8 EX DG Aspherical Macro and Tokina 20mm f/2 FE AF FiRIN [S]ave
| Attribute |  Sigma 24mm ƒ/1.8 EX DG Aspherical Macro × |  Tokina 20mm f/2 FE AF FiRIN × |
|---|---|---|
| Aperture (f) | 1.80 - 22.00 | 2.00 - 22.00 |
| Filter Size (mm) | 77 | 62 |
| Notes | Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax, Four-Thirds | For Sony Full-frame E-Mount; Bayonet type lens hood included. |
| Closest Focus (m) | 0.18 | 0.28 |
| Magnification Ratio (x) | 0.37 | 0.097 |
| Type | Wide Prime | Wide Prime |
| Focus Details | Dual Focus mechanism | Internal AF with Ring-Type Ultrasonic Motor; Full-Time Manual Focus Override |
| APS Equivalent | 1.5x: 36mm; 1.6x: 38.4mm | 1.5x: 30mm |
| Diaphragm Blades | 9 | 9 |
| Image Circle | 35mm | 35mm |
| Focal Length (mm) | 24.00 | 20.00 |
| Brand | Sigma | Tokina |
| Name | Sigma 24mm ƒ/1.8 EX DG Aspherical Macro | Tokina 20mm f/2 FE AF FiRIN |
| Weight (g) | 485 | 464 |
| Diagonal Angle of View (degree) | 84.10 | 92.70 |
| Length (mm) | 82.5 | 81.5 |
| Diameter (mm) | 83.6 | 73.4 |
| Lens Construction | 10 elements in 9 groups, including 2 aspherical elements | 13 elements in 11 groups, including 2 aspherical and 3 Super-Low Dispersion (SD) elements |
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