| Zeiss Loxia Distagon T* 2.8/21mm | |
| Maker: | Zeiss |
| Mount: | Sony E-mount |
| Feat-Ws: | y |
| Feat-Is: | n |
| Feat-Ar: | y |
| Feat-Mfo: | y |
| Feat-Special: | Digital focus distance scale |
| Application: | Landscape, Architectural |
| Type: | p |
| Flength: | 21mm |
| Image-Format: | 35mm full-frame |
| Elements: | 11 |
| Groups: | 9 |
| Diaphragm: | 10 |
| Close-Dist: | 0.25m (00.82feet) |
| Max-Dist: | Infinity |
| Max-Mag: | 0.13x |
| Max-Diameter: | 62mm |
| Max-Length: | 72mm |
| Weight: | 394g |
| Filter: | 52mm |
| Hood: | Barrel-type, metal |
| Start: | 2015 |
| Msrp: | $1499 |
The Zeiss Loxia Distagon T* 2/21mm is a full-frame (FE) wide-angle manual focus prime lens for the Sony E-mount, announced by Zeiss on October 12, 2015.
Though designed for Sony's full frame E-mount cameras, the lens can be used on Sony's APS-C E-mount camera bodies, with an equivalent full-frame field-of-view of 31.5mm.
The lens features a minimalist weather resistant metal construction with a matte black finish and an aperture de-click screw found at the bottom of the lens.
The lens is exceptionally sharp from its maximum aperture of f/2.8 across the frame. Distortion and chromatic aberration are all well controlled. However, the lens suffers from moderate vignetting.
The lens also excels at low-light photography given its fast maximum aperture of f/2.8 and exceptional coma control. In addition, having a wide-angle field-of view allows for longer exposures to be taken of stars without the effect of star trails affecting the resultant image.