Sigma 180mm f/2.8 APO Macro EX DG OS HSM Lens - Canon

The Sigma 180mm f/2.8 APO Macro EX DG OS HSM 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.

Key Features
- High-speed f/2.8 180mm macro lens provides 1:1 magnification ratio. 
- FLD glass elements and a floating inner focusing system 
- Superior correct for color aberration, field curvature, and image distortion. 
- Multi-layer coating reduces ghosting and flare and provides greater contrast and color fidelity. 
- Rounded 9 blade diaphragm produces an attractive out of focus quality. 
- Integrated Optical Stabilizer system 
- A Hyper Sonic Motor is incorporated into the lens design
- Quiet and quick auto focusing and manual focus capabilities.