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| Manufacturer | Sigma | Sigma |
|---|---|---|
| Model | 17-50 mm f/2.8 EX DC OS HSM | 18-50 mm f/2.8 EX DC |
| Lenst style | Universal zoom | Universal zoom |
| Focal length | 17 - 50 mm | 18 - 50 mm |
| Maximum aperture | f/2.8 | f/2.8 |
| Angle of view | 72.4 - 27.9 o | 69.3 - 27.9 o |
| Closest focusing distance | 0.28 m | 0.28 m |
| Maximum magnification | 1:5 | 1:5 |
| Minimum aperture | 22 | 22 |
| Diaphragm blades | 7 | 7 |
| Auto focus type | HSM | AF |
| Lens Construction | 17 elements / 13 group | 15 elements / 13 group |
| Filter diameter | 77 mm | 67 mm |
| Macro Yes/No | No | No |
| Stabilization | Yes | No |
| Available mounts | Nikon F Sony A / Minolta Sigma Pentax K Canon EF-S |
Nikon F Sony A / Minolta Sigma Pentax K Canon EF-S |
| Dimensions | 83.5 x 91.8 mm | 74.1 x 84.1 mm |
| Weight | 565 g | 445 g |
| Additional information | Two FLD (“F” Low Dispersion)
glass elements Two glass mold and one hybrid aspherical lens Optical Stabilizer Released: Feb. 2010 |
|
| Score [max 5.00] | ||
| Our Review |
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