Venus Laowa 9mm f2.8 ZeroD
~$750 USD
Specifications
| Focal length | 9mm |
| Max aperture | f/2.8 |
| Sweet spot | f/4 |
| Aperture blades | 7 |
| Min focus distance | 120mm |
| AF motor | Manual focus |
| OIS | No |
| Weather sealed | No |
| Aperture ring | Yes |
| Weight | 200g |
| Filter thread | 49mm |
| Year | 2018 |
Optical Quality 12/14
| Center (wide open) | 2.0 |
| Corner (wide open) | 0.5 |
| Center (stopped) | 2.0 |
| Corner (stopped) | 1.0 |
| Astigmatism | 1.5 |
| Spherical aberration | 2.0 |
| Longitudinal CA | 2.0 |
| Lateral CA | 1.5 |
| Distortion | 1.0 |
| Vignetting (wide open) | 0.0 |
| Vignetting (stopped) | 0.5 |
| Flare resistance | 0.5 |
0-2 scale. See scoring methodology.