Panasonic Lumix S 20mm F2.5 vs Viltrox AF 20mm F2.8 Air
Every published spec side by side, with today's lowest prices for the market you've chosen.
Key differences
- Maximum aperture: f/2.5 on the Lumix S 20mm F2.5, against f/2.8 on the AF 20mm F2.8 Air.
- Closest focus: 0.18 m on the Lumix S 20mm F2.5, against 0.19 m on the AF 20mm F2.8 Air.
- Max magnification: 0.17× on the AF 20mm F2.8 Air, against 0.15× on the Lumix S 20mm F2.5.
- Weight: 142 g on the Lumix S 20mm F2.5, against 157 g on the AF 20mm F2.8 Air.
Lumix S 20mm F2.5 or AF 20mm F2.8 Air: which should you buy?
Choose the Lumix S 20mm F2.5 for its maximum aperture, closest focus and weight.
Choose the AF 20mm F2.8 Air for its max magnification.
On paper the Lumix S 20mm F2.5 wins more rows (3 to 1); if the AF 20mm F2.8 Air's strengths are the ones you shoot with, and its price is lower where you buy, it can still be the better buy.
 |  | |
|---|---|---|
| Lowest price today | $497.99 new | $150 used |
| Optics | ||
| Focal length | 20mm | 20mm |
| 35mm equivalent | 20mm (full frame) | 20mm (full frame) |
| Maximum apertureLower f-number lets in more light. A zoom wins only when it is as bright at both ends. | f/2.5 (best) | f/2.8 |
| Minimum aperture | f/22 | f/16 |
| Made for | Full frame | Full frame |
| Elements / groups | 11 / 9 | 10 / 8 |
| Aperture blades | 7 | 7 |
| Closest focus | 0.18 m (best) | 0.19 m |
| Max magnification | 0.15× | 0.17× (best) |
| Focus & handling | ||
| Autofocus | Yes (Stepping motor) | Yes (STM) |
| Optical stabilisation | No | No |
| Weather sealed | Yes | — |
| Internal zoom | — | — |
| Aperture ring | No | — |
| Teleconverter compatible | No | No |
| Size & weight | ||
| Weight | 142 g (best) | 157 g |
| Diameter × length | 69.4 × 40.9 mm | 65 × 59.5 mm |
| Filter thread | 62 mm | 52 mm |
Green marks the better figure where “better” is unambiguous. A dash means the maker doesn't publish it or we haven't verified it yet.