The APO Macro Sigma 180mm F2.8 EX DG OS HSM is a high performance telephoto macro lens designed for Full Frame sensors but may also be used with smaller APS-C size sensors with a corresponding effective increase in focal length to about 260mm with most cameras. The 180mm F2.8 has a large aperture to handle any lighting scenario and the macro capabilities allow focusing down to 1:1 magnification ratio at its closest working distance of 18.5 inches. A Hyper Sonic Motor (HSM) ensures quiet, high speed, and accurate autofocusing while an Optical Stabilizer (OS) compensates for camera shake when shooting hand held. The 180mm F2.8 macro also incorporates a floating Internal Focusing system which reduces aberration during shooting working together with three FLD ("F" Low Dispersion) glass elements for superior correction of color aberration. This lens has a rounded 9 blade diaphragm creating an attractive blur to the out of focus areas of the image and is also compatible with Sigma APO teleconverters.
The Sigma 180mm f/2.8 APO Macro EX DG OS HSM Lens 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 Canon EF mount for use on full-frame and APS-C DSLRs.
| Brand: | Sigma |
| Max Format Size (mm): | 35 |
| (F) Maximum Aperture: | 2.8 |
| (F) Minimum Aperture: | 22 |
| Aperture Ring: | No |
| Number of Diaphragm Blades: | 9 |
| Elements: | 19 |
| Groups: | 14 |
| Minimum Focus (m): | 0.47 |
| Maximum Magnification (x): | 1 |
| Autofocus: | Yes |
| Motor Type: | Ring-type ultrasonic |
| Full time Manual: | No |
| Focus Method: | Internal |
| Distance Scale: | Yes |
| DoF Scale: | No |
| Diameter (mm): | 95 mm (3.74″) |
| Length (mm): | 204 |
| Sealing: | No |
| Power zoom: | No |
| zoom_lock: | No |
| Filter Thread (mm): | 86 |
| Tripod Collar: | Yes |
| Tripod Supplied: | No |
