October 2011 - "I was half expecting the 150mm to be a slightly more grown up version of Sigma's 105mm macro that I tried last year. This, however, is a very different beast; modern, slick and smooth. The finish is exemplary, a super smooth, silk black barrel with the heavy, cool feel that only metal manufacture can give. " Read more about the Sigma 150mm Macro Lens here...
Sigma 150mm f2.8 EX DG OS HSM Macro
SLD glass and Super Multi Layer Coating
Three SLD (Special Low Dispersion) glass elements provide excellent correction of all types of aberrations and the Super Multi-Layer Coating reduces flare and ghosting. This lens has superior peripheral brightness and provides sharp, high contrast images even at the maximum apertures.
F2.8 large aperture tele-macro lens
Tele macro lenses have a greater working distance. It is possible to enjoy Macro photography, even when you are far from subject. This enables you to capture the small animals and insects without disturbing them. Very narrow depth-of-field allows selective focusing and less distracting backgrounds. Large aperture of F2.8 is ideal for sports, action and indoor photography.
Hyper Sonic Motor (HSM) with full time manual focus override
The HSM (Hyper Sonic Motor) ensures quiet and high speed autofocus as well as full-time manual focus capability.
DG
Sigma’s DG lenses are designed for cameras with a full-frame sensor, but cameras with a cropped sensor can also take these lenses. These are large-aperture lenses with wide angles and short minimum focusing distances. With an abundance of peripheral illumination, they are ideal lenses for Digital SLR Cameras whilst retaining suitability for traditional 35mm SLRs.
EX
The exterior of this lens is EX-finished to denote the superior build and optical quality, and to enhance its appearance.
Rounded 9 blade aperture ring
This lens has a rounded 9 blade diaphragm creating a smooth blur to the out of focus areas of the image. It is also possible to use this lens with Sigma’s optional APO Tele Converters.
APO Tele-Converter EX compatibility
It is also possible to use this lens with Sigma 1.4x EX and 2x EX APO Tele-Converter. When this lens is used with the 1.4x EX or 2x EX Apo Tele Converters (optional), it becomes a 210mm F4 AF tele-macro lens or a 300mm F5.6 MF tele-macro lens respectively.