 | |
| Maker | Sigma |
|---|---|
| Technical data | |
| Type | Zoom |
| Focal length | 12-24mm |
| Crop factor | 1.0 |
| Aperture (max/min) | f/4.5-f/22 |
| Close focus distance | 28cm |
| Max. magnification | 1:7.1 |
| Diaphragm blades | 6 |
| Construction | 16 elements in 12 groups |
| Features | |
| Short back focus |  No |
| Ultrasonic motor |  Yes |
| Lens-based stabilization |  No |
| Macro capable | No |
| Application | Landscape |
| Physical | |
| Max. length | 102.5mm |
| Diameter | 87mm |
| Weight | 600g |
| Filter diameter | rear gelatin |
| Accessories | |
| Lens hood | built-in |
| Angle of view | |
| Diagonal | 122 to 84.1 degrees |
| History | |
| Introduction | June 2003 |
| Retail info | |
| MSRP | 1050 USD |
The Sigma 12-24mm f/4.5-5.6 EX DG HSM is a professional-level wide-angle zoom lens made by Sigma Corporation.[1] At launch it was the widest rectilinear lens available for full-frame 35mm SLR cameras, providing a field of view of 122 degrees. It has since been surpassed by the Canon EF 11-24mm f/4L zoom lens and the Irix 11mm f/4, a manual focus prime lens.[2] The Sigma 12-24 has low distortion even compared to less wide zooms like the Canon EF 16-35mm lens.[3]
This lens is available in Canon, Nikon, and Sigma, Pentax, and Sony mounts. HSM focusing is available only in the Canon, Nikon, and Sigma variants.[4] The build quality is typical of Sigma EX lenses, with a painted metal lens barrel and damped focus and zoom rings. As expected for a lens of these specifications, there is a bulbous front element.[5]
