Tamron 20mm F2.8 Di III OSD M1:2 Specs
| Lens type |
Prime lens |
| Max Format size |
35mm FF |
| Focal length |
20 mm |
| Image stabilization |
No |
| Lens mount |
Sony FE |
| Aperture |
|
| Maximum aperture |
F2.8 |
| Aperture ring |
No |
| Number of diaphragm blades |
7 |
| Optics |
|
| Elements |
10 |
| Groups |
9 |
| Special elements / coatings |
Low-dispersion and aspherical elements + BBAR and fluorine coatings |
| Focus |
|
| Minimum focus |
0.11 m (4.33″) |
| Maximum magnification |
0.5× |
| Autofocus |
Yes |
| Motor type |
Micromotor |
| Full time manual |
No |
| Focus method |
Internal |
| Distance scale |
No |
| DoF scale |
No |
| Physical |
|
| Weight |
220 g (0.49 lb) |
| Diameter |
73 mm (2.87″) |
| Length |
64 mm (2.52″) |
| Sealing |
Yes |
| Colour |
Black |
| Filter thread |
67 mm |
| Hood supplied |
Yes |
| Tripod collar |
No |
| Other |
|
Manufacturer description
The Tamron 20mm F2.8 Di III OSD M1:2 is a wide-angle macro lens for full-frame Sony mirrorless cameras. As its name implies, the lens has a maximum magnification of 0.5x, and its minimum focus distance is just 11cm (4.3″). The lens has both aspherical and low-dispersion elements, a seven-blade diaphragm and a weather-resistant design. Like its 24 and 35mm siblings, the lens uses 67mm filters.
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