Sigma 28mm F1.8 Aspherical
Launched 1991
A fast wide prime from 1991, displaying Sigma’s expertise with wide angle lenses during the 1980s and 90s
| Specifications | |
| Construction | 9 Elements in 8 Groups |
| Focal Length | 28mm |
| Maximum Aperture | ƒ1.8 |
| Minimum Aperture | ƒ16 |
| Field of View | 75° |
| Minimum Focus Distance | 30cm |
| Number of blades | 7 |
| Maximum Magnification | N/A |
| Zooming System | N/A |
| Filter Size | 58mm |
| Diameter | 56.8mm (max.) |
| Length | 69.5mm |
| Weight | 350g |
| SRP at launch: | N/A |
| Available Mounts: | Manual Focus Mounts |