Sigma 18-35mm f/1.8 DC HSM A
The Sigma 18-35mm f/1.8 DC HSM Art lens is a fast, constant-aperture wide standard zoom lens made by Sigma Corporation. It was announced April 18, 2013.
 | |
| Maker | Sigma Corporation |
|---|---|
| Technical data | |
| Type | Zoom |
| Focus drive | Hypersonic motor |
| Focal length | 18-35mm |
| Focal length (35mm equiv.) | 27-52.5mm |
| Aperture (max/min) | f/1.8 - f/16 |
| Close focus distance | 0.28 metres (0.92 ft) |
| Max. magnification | 0.23 |
| Diaphragm blades | 9, rounded |
| Construction | 17 elements in 12 groups |
| Features | |
| Lens-based stabilization |  No |
| Unique features | Art series; 5 SLD glass elements, 4 glassmold aspherical elements, wide aperture |
| Application | Standard zoom |
| Physical | |
| Max. length | 121 millimetres (4.8 in) |
| Diameter | 78 millimetres (3.1 in) |
| Weight | 810 grams (1.79 lb) |
| Filter diameter | 72mm |
| Accessories | |
| Lens hood | LH780-03 |
| History | |
| Introduction | 2013 |
This lens, at its time of manufacturing, was considered a game changer due to it being the only standard zoom boasting a constant f/1.8 aperture. The lens was designed specifically for crop body DSLRs enabling a crop factor adjusted (full frame equivalent) of f/2.88 for Canon or f/2.7 for Nikon crop body DSLRs across an equivalent range of 28mm-56mm (Canon full frame adjusted) or 27mm-53mm (Nikon full frame adjusted).
In the year of its introduction, the lens won an EXC!TE award[1] and was named Lens of the Year at the Camera Grand Prix.[2]
References
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