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Sigma 18-50mm f/2.8-4.5 DC OS HSM lens 
Summary
The 18-50mm f/2.8-4.5 DC OS HSM is a wide-angle zoom lens produced by Sigma Corporation. The lens has four different variates, fitting on the Canon EF mount, Pentax K mount, Minolta A-mount, and the Nikon F-mount. It features internal focusing and internal zooming, as well as two SLD elements and three aspherical lenses.[1][2]
 | |
| Maker | Sigma Corporation |
|---|---|
| Technical data | |
| Focal length | 18-50mm |
| Aperture (max/min) | f/2.8 - f/22 |
| Close focus distance | 30cm |
| Max. magnification | 1:4.1 |
| Diaphragm blades | 7 |
| Construction | 16 elements in 12 groups |
| Features | |
| Short back focus |  No |
| Ultrasonic motor |  Yes |
| Lens-based stabilization | Yes |
| Macro capable |  No |
| Application | Wide-angle |
| Physical | |
| Max. length | 88.6mm |
| Diameter | 74mm |
| Weight | 395 g |
| Filter diameter | 67 mm |
| Accessories | |
| Lens hood | Petal |
| Angle of view | |
| Diagonal | 69.3° - 27.9° |
| Retail info | |
| MSRP | $420.00 USD USD |
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