Incorporating 2 FLD glass elements, which give a performance equal to fluorite elements, and 3 SLD glass elements, the Sigma 150-600mm 5-6.3 DG HSM OS Sport produces incredibly sharp images through its entire zoom range. It is highly durable thanks to its dust and splash proof construction. An updated optical stabilizer (OS) features an accelerometer which provides an improvement when performing both horizontal and vertical panning, essential for photographing wildlife and sports. Also included is a new zoom lock switch which can be locked at any focal length, and a new manual override (MO) switch which is activated by rotating the focus ring while using the autofocus. Finally, the impressive features are rounded-out by an improved, quieter autofocus, water/oil repellent coating on both the front and rear elements, and Mount Conversion service compatibility in case you ever switch camera brands.
As with all Sport line lenses, the Sigma 150-600mm works with the Sigma USB dock for maximum customization allowing for firmware updates and adjustments to the focus limiter, AF speed and OS view.
The SIGMA DG Lens Series are high-performance SLR lenses that offer full-frame sensor coverage designed to deliver the ultimate in performance on full-frame digital SLRs, Sigma DG lenses also bring out the best in 35mm SLR film cameras and APS-C size DSLRs. Remarkable image rendition is achieved by comprehensive correction of aberrations and distortions. Special care is taken to thoroughly minimize colour fringing caused by lateral chromatic aberration, which is particularly noticeable at high resolution in digital photography. DG lenses can offer both high contrast and subtle tonal gradations, unmarred by flare and ghosting, thanks to Sigma's digitally optimized optical design and original Super Multi-Layer Coating technology, which suppress reflections between image sensor and lens surfaces. Large image circles assure ample peripheral bright- ness to prevent vignetting.
The HSM (Hyper Sonic Motor) ensures a silent, high-speed AF function. By optimizing the AF algorithm, smoother AF is achieved. Also, this lens offers full-time MF by rotating the focus ring of the lens while auto focusing. Without changing the AF/MF Focus Mode Switch, it allows faster focus adjustment.
More Reasons to Choose a SIGMA Lens:
QUALITYSigma inspects each and every lens with their proprietary Foveon-based A1 MTF measuring system, which guarantees every lens meets their high optical standards.
CRAFTSMANSHIP“Made in Japan” craftsmanship is what makes SIGMA lenses high-performance, high-quality, and high-end.
CUSTOMIZATIONThe SIGMA USB DOCK accessory and exclusive software let you personalize the specification of your new Sigma lenses.

7 YEAR WARRANTY
Sigma stands behind its lenses with a 7 year international warranty. It guarantees your Sigma 150mm f2.8 EX DG OS HSM Macro Lens against manufacturing defects for seven years from the date of the original purchase.