Sigma's stabilised 1:1 macro with HSM — the improved successor adding OS and improved optics.
The Sigma 105mm f/2.8 EX DG OS HSM Macro is the updated version of Sigma's popular 105mm macro, adding optical stabilisation and improved HSM autofocus. It provides true 1:1 life-size magnification for macro photography while doubling as a portrait lens.
Optically excellent — sharp at macro distances with well-controlled chromatic aberration. The OS stabilisation provides approximately 4 stops of correction, a significant advantage for handheld macro work. HSM motor is fast and quiet with full-time manual override. SLD glass elements.
Available in Canon EF, Nikon F, and Sony A mounts. 62mm filter thread. Weighs approximately 725g — heavier than the non-OS version. No weather sealing. Minimum focus distance 31.2cm at 1:1 magnification. EX designation — professional build quality.
Available used at mid-range prices. The OS stabilisation makes this a clear upgrade over the non-OS version. Check for smooth focus ring and clear optics. Competes well with the Canon 100mm f/2.8L IS Macro and Nikon 105mm f/2.8G VR. Excellent value macro lens.