Comparison of Olympus 25mm f/2.8 Zuiko Digital and Sony E 20mm f/2.8 SEL20F28 [S]ave
| Attribute |  Olympus 25mm f/2.8 Zuiko Digital × |  Sony E 20mm f/2.8 SEL20F28 × |
|---|---|---|
| Diagonal Angle of View (degree) | 47.00 | - |
| Aperture (f) | 2.80 - 22.00 | 2.80 - 22.00 |
| Diaphragm Blades Type | circular | rounded |
| Filter Size (mm) | 43 | 49 |
| Notes | Included Accessories: Lens cap (LC-43), rear cap (LR-1). Screw-in aluminum lens cap, and lens hood optional. | Sony E-Mount. Included Accessories: front and rear lens caps. |
| APS Equivalent | - | 30mm |
| Type | Standard Prime | Wide Prime |
| Diaphragm Blades | 7 | 7 |
| Lens Construction | 5 elements in 4 groups, including aspherical element | 6 elements in 6 groups, includes 3 aspherical surfaces |
| Image Circle | Image Circle | APS-C (Sony E-Mount) |
| Focal Length (mm) | 25.00 | 20.00 |
| Brand | Olympus | Sony |
| Name | Olympus 25mm f/2.8 Zuiko Digital | Sony E 20mm f/2.8 SEL20F28 |
| Weight (g) | 95 | 69 |
| Diameter (mm) | 64 | 62.6 |
| Length (mm) | 23.5 | 20.4 |
| 35mm Equivalent | 50mm | - |
| Magnification Ratio (x) | 0.19 | 0.12 |
| Focus Details | - | Autofocus with stepper motor (quiet AF for movie capture); Direct Manual Focus supported. |
| Closest Focus (m) | 0.2 | 0.2 |
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