Sigma 45mm F2.8 DG DN Contemporary Specs
| Lens type | Prime lens |
| Max Format size | 35mm FF |
| Focal length | 45 mm |
| Image stabilization | No |
| Lens mount | L-Mount, Sony FE |
| Aperture | |
| Maximum aperture | F2.8 |
| Minimum aperture | F22 |
| Aperture ring | Yes |
| Number of diaphragm blades | 7 |
| Optics | |
| Elements | 8 |
| Groups | 7 |
| Focus | |
| Minimum focus | 0.24 m (9.45″) |
| Maximum magnification | 0.25× |
| Autofocus | Yes |
| Motor type | Stepper motor |
| Full time manual | Yes |
| Focus method | Internal |
| Distance scale | No |
| DoF scale | No |
| Physical | |
| Weight | 215 g (0.47 lb) |
| Diameter | 64 mm (2.52″) |
| Length | 46 mm (1.81″) |
| Sealing | Yes |
| Filter thread | 55 mm |
| Hood supplied | Yes |
| Other | |
| Notes | Weight and dimensions for L-mount version. |
Manufacturer description
The Sigma 45mm F2.8 DG DN | Contemporary is a standard prime lens for full-frame Sony, Panasonic and Leica cameras. The lens is compact and lightweight, despite its high build quality (which includes dust and splash resistance). It has 8 elements, a 7-blade aperture, and a minimum focus distance of 24cm (9.4″). The 45mm F2.8 has an aperture ring and full-time manual mode. The lens is 46mm (1.8″) long and weighs just 215g (7.5oz).
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