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| Manufacturer | Canon | Nikon Nikkor | Pentax | Sigma |
|---|---|---|---|---|
| Model | EF 24 mm f/2.8 | AF 24 mm f/2.8D | smc FA 28 mm f/2.8 AL | 24 mm f/1.8 EX DG Aspherical Macro |
| Lenst style | Wide angle | Wide angle | Wide angle | Wide angle |
| Focal length | 24 mm | 24 mm | 28 mm | 24 mm |
| Maximum aperture | f/2.8 | f/2.8 | f/2.8 | f/1.8 |
| Angle of view | 84 o | 84 o | 75 o | 84.1 o |
| Closest focusing distance | 0.25 m | 0.3 m | 0.3 m | 0.18 m |
| Maximum magnification | 1:6.25 | 1:8.9 | 1:2.7 | |
| Minimum aperture | 22 | 22 | 22 | 22 |
| Diaphragm blades | 6 | 7 | 0 | 9 |
| Auto focus type | AF | AF | AF | AF |
| Lens Construction | 10 elements / 10 group | 9 elements / 9 group | 5 elements / 5 group | 10 elements / 9 group |
| Filter diameter | 58 mm | 52 mm | 49 mm | 77 mm |
| Macro Yes/No | No | No | No | Yes |
| Stabilization | No | No | No | No |
| Available mounts | Canon EF | Nikon F | Pentax K | Canon EF Nikon F Sony A / Minolta Sigma Pentax K |
| Dimensions | 67.5 x 48.5 mm | 64.5 x 46 mm | 63.5 x 40.5 mm | 83.6 x 82.5 mm |
| Weight | 270 g | 270 g | 185 g | 485 g |
| Additional information | Marketed November 1988 | Marketed 1993 | ||
| Score [max 5.00] | ||||
| Our Review |
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