150mm f/2.8 EX DG OS HSM APO Macro Zoom Lens
150mm f/2.8 EX DG OS HSM APO Macro Zoom Lens doubles up as an excellent telephoto lens along with its 1:1 magnification ratio to give life-size reproduction for even the smallest of subjects. It features a fast maximum aperture of f/2.8, SigmaÕs HSM (Hyper-sonic Motor) for silent auto-focusing and Optical Image Stabilization for a blur free shooting experience. 9-blade aperture diaphragm and 19 elements arranged in 13 groups make up the lens construction.
The Sigma Macro 150mm F2.8 EX DG OS HSM is a high performance macro lens designed for full frame cameras but may also be used with smaller APS-C size sensors with a corresponding effective increase in focal length to about 225mm with most cameras. This highly optimized lens has an ideal focal length and is equipped with Sigma technology including an Optical Stabilizer (OS), Hyper Sonic Motor (HSM) and Super Multi-Layer Coating. The HSM ensures accurate, quiet, high speed autofocusing while the OS compensates for camera shake. The Super Multi-Layer Coating reduces flare and ghosting. The 150mm F2.8 macro focuses down to 1:1 magnification ratio at its closest working distance of 15 inches. The focal length for this lens can be increased due to its compatibility with Sigma APO Tele Converters.