The Sigma 180mm f/2.8 APO Macro EX DG OS HSM Lens (for Sony) is a high-speed macro lens offering a magnification ratio of 1:1 and a focal length of 180mm. This lens is compatible with the Sony A mount for use on full-frame and APS-C DSLRs.
This lens incorporates 3 FLD glass elements for color aberration corrections, as well as a floating inner focusing system to reduce other aberrations such as field curvature and distortion, resulting in accurate scene rendition from 1:1 magnification to infinity. A Super Multi-Layer coating helps to eliminate ghosting and flare as well as produce images with more contrast and sharpness. The rounded 9 blade diaphragm also provides an appealing bokeh, especially when photographing at the maximum aperture or at 1:1 magnification.
The integrated OS (Optical Stabilizer) system permits users to photograph handheld with shutter speeds up to 4 stops lower than usually possible. An HSM (Hyper Sonic Motor) is also incorporated into the design, ensuring quiet and quick auto focusing and manual focus capabilities.
| Performance | |
|---|---|
| Focal Length | 180 mm |
| Aperture |
Maximum: f/2.8 Minimum: f/22 |
| Camera Mount Type | Sony Alpha, Minolta AF |
| Format Compatibility |
35mm Film / Full-Frame Digital Sensor DSLR (APS-C Sensor) |
| Angle of View | 13.7° |
| Minimum Focus Distance | 18.5" (46.99 cm) |
| Maximum Reproduction Ratio | 1:1 |
| Groups/Elements | 19/14 |
| Diaphragm Blades | 9 |
| Features | |
|---|---|
| Image Stabilization | Yes |
| Autofocus | Yes |
| Tripod Collar | Yes |
| Physical | |
|---|---|
| Filter Thread | Front: 86 mm |
| Dimensions (DxL) | Approx. 3.74 x 8.03" (95 x 203.9 mm) |
| Weight | 3.6 lb (1.63 kg) |