| Attribute | Value |
|---|---|
| Lens Construction | 11 elements in 9 groups, including 1 aspherical and 4 anomalous partial dispersion elements; Zeiss T* anti-reflective coating |
| Diameter | 62.1 mm |
| Diagonal Angle of View | 91.00 degree |
| Diaphragm Blades Type | rounded |
| Aperture | 2.80 - 22.00 f |
| Notes | Sony E-Mount (full frame); Weather-resistant lens mount gasket; Included Accessories: Lens hood, front and rear lens caps, de-click key. |
| Filter Size | 52 mm |
| Magnification Ratio | 0.13 x |
| Closest Focus | 0.25 m |
| Focus Details | Manual focus only, with large 180 degree focus throw, engraved distance and DOF scales |
| Length | 85 mm |
| Diaphragm Blades | 10 |
| APS Equivalent | 1.5x: 31.5mm |
| Focal Length | 21.00 mm |
| Image Circle | 35mm |
| Brand | Carl-zeiss |
| Name | Zeiss 21mm f/2.8 Loxia 2.8/21 |
| Weight | 394 g |
| Type | Wide Prime |
| 35mm Equivalent | Add |
| Effective Reduction in Aperture | Add |
| Focal Length Multiplier | Add |
| APS-C Equivalent | Add |
| Zoom System | Add |
| Front Element Rotation | Add |