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| Manufacturer | Carl Zeiss | Pentax | Sigma | Canon |
|---|---|---|---|---|
| Model | Distagon T* 28 mm f/2.0 ZF/ZK/ZE | smc FA 31 mm f/1.8 AL | 28 mm f/1.8 EX DG Aspherical Macro | EF 28 mm f/1.8 USM |
| Lenst style | Wide angle | Wide angle | Wide angle | Wide angle |
| Focal length | 28 mm | 31 mm | 28 mm | 28 mm |
| Maximum aperture | f/2 | f/1.8 | f/1.8 | f/1.8 |
| Angle of view | 75.4 o | 69.8 o | 75.4 o | 75.4 o |
| Closest focusing distance | 0.24 m | 0.3 m | 0.2 m | 0.25 m |
| Maximum magnification | 1:5 | 1:6.25 | 1:2.9 | 1:5.5 |
| Minimum aperture | 22 | 22 | 22 | 22 |
| Diaphragm blades | 0 | 9 | 9 | 7 |
| Auto focus type | MF | AF | AF | USM |
| Lens Construction | 10 elements / 8 group | 9 elements / 7 group | 10 elements / 9 group | 10 elements / 9 group |
| Filter diameter | 58 mm | 58 mm | 77 mm | 58 mm |
| Macro Yes/No | No | No | Yes | No |
| Stabilization | No | No | No | No |
| Available mounts | Canon EF Nikon F Pentax K |
Pentax K | Canon EF Nikon F Sony A / Minolta Sigma Pentax K |
Canon EF |
| Dimensions | 65 x 94 mm | 66 x 68.5 mm | 83.6 x 82.5 mm | 73.6 x 55.6 mm |
| Weight | 530 g | 345 g | 500 g | 319 g |
| Additional information | Marketed October 1995 | |||
| Score [max 5.00] | ||||
| Our Review |
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