Product Specifications
| Focal Length | 16mm 18mm 21mm |
| Aperture | f/4 to f/22 |
| Camera Mount Type | Leica M |
| Angle of View | 16mm: 107° 18mm: 100° 21mm: 92° |
| Minimum Focus Distance | 1.6′ / 50 cm |
| Reproduction Ratio | 16mm: 1:38 18mm: 1:35 21mm: 1:30 |
| Optical Design | 10 elements in 7 groups |
| Diaphragm Blades | Not specified by manufacturer |
| Focus | Manual |
| Filter Thread | N/A (male thread to accept included lens hood or optional 67 mm filter holder) |
| Dimensions | 2.1 x 2.4″ / 54 x 62 mm |
| Weight | 11.8 oz / 335 g |
| Package Weight | 1.25 lb |
| Box Dimensions (LxWxH) | 5.9 x 4.8 x 4.8″ |
