Comparison of Carl Zeiss 25mm f/2.8 Distagon T* 2.8/25 and Tokina 20mm f/2 FE MF FiRIN [S]ave
| Attribute |  Tokina 20mm f/2 FE MF FiRIN × |  Carl Zeiss 25mm f/2.8 Distagon T* 2.8/25 × |
|---|---|---|
| Diagonal Angle of View (degree) | 92.70 | 80.20 |
| Notes | For Sony Full-frame E-Mount; Square bayonet type lens hood included. | Available SLR mounts: Nikon F-Mount (ZF, ZF.2), Pentax K-Mount (ZK), M42 Screw-Mount (ZS). Nikon ZF.2 version includes CPU interface for autoexposure |
| Aperture (f) | 2.00 - 22.00 | 2.80 - 22.00 |
| Closest Focus (m) | 0.28 | 0.17 |
| Filter Size (mm) | 62 | 58 |
| Type | Wide Prime | Wide Prime |
| Focus Details | Internal; Manual focus only | Manual focus only |
| APS Equivalent | 1.5x: 30mm | 1.5x: 37.5mm |
| Diaphragm Blades | 9 | 9 |
| Image Circle | 35mm | 35mm |
| Focal Length (mm) | 20.00 | 25.00 |
| Brand | Tokina | Carl-zeiss |
| Name | Tokina 20mm f/2 FE MF FiRIN | Carl Zeiss 25mm f/2.8 Distagon T* 2.8/25 |
| Weight (g) | 490 | 480 |
| Diameter (mm) | 69 | 65 |
| Length (mm) | 81.5 | 66 |
| Magnification Ratio (x) | 0.097 | - |
| Lens Construction | 13 elements in 11 groups, including 2 aspherical and 3 Super-Low Dispersion (SD) elements | 10 elements in 8 groups |
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