Sigma EX DG 105mm f2.8 Macro OS

Sigma EX DG 105mm f2.8 Macro OS lens. This large aperture telephoto macro lens incorporates Sigma's original Optical Stabilizer function. SLD glass elements provide excellent correction of all types of aberrations. Super Multi-Layer Coating reduces flare and ghosting and a floating inner focusing system provides high optical performance from infinity to 1:1 macro. The HSM (Hyper Sonic Motor) ensures quiet and high speed autofocus as well as full-time manual focusing capability. Attaching Sigma's optional Tele Converters enables photographers to shoot large than 1:1 magnification. This telephoto macro lens has a longer working distance than traditional macro lenses. It is perfect when distance between the subject and photographer is important such as when taking pictures of small animals or insects. The long focusing distance and narrow depth-of-field allows selective focusing and less distracting backgrounds. This lens can be used as normal telephoto lens as well. Three SLD (Special Low Dispersion) glass elements provide correction of various aberrations. This lens has superior peripheral brightness and its distortion is corrected effectively. The Super Multi-Layer Coating reduces flare and ghosting and provides sharp and high contrast images even at the maximum aperture.