CP+ 2011: Sigma has announced an entirely redesigned version of its 105mm F2.8 macro lens that incorporates optical image stabilization. The 105mm F2.8 EX DG OS HSM offers true 1:1 macro reproduction, and uses a floating focus system to maintain high optical performance at all distances. It also features a splash-proof barrel design and Sigma's Hypersonic Motor for fast, silent autofocus coupled with full-time manual focus capability. The lens is designed for use on both full frame and APS-C SLRs.

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Press Release:

Sigma 105mm f/2.8 EX DG OS HSM

Medium telephoto macro lens incorporating Sigma’s Optical Stabiliser

  • Large aperture medium telephoto macro lens
  • Sigma’s proprietary Optical Stabilisation system
  • 1:1 Maximum reproduction ratio
  • Rounded 9 blade diaphragm creates an attractive blur
  • Splash proof design

The Sigma Corporation is pleased to announce the Sigma MACRO 105mm F2.8 EX DG OS HSM.

The successor to the Sigma MACRO 105mm F2.8 EX DG, introduced to market in June 2004, this large aperture medium telephoto macro lens incorporates the latest optical design technology, offering advanced performance for cloase-up photography. A Special Low Dispersion (SLD) lens and one high refractive index SLD lens provide excellent correction for all types of aberration and distortion.

A floating focusing system moves two different lens groups in the optical path to different positions. This system compensates for astigmatic aberration and spherical aberration and provides extremely high optical performance from infinity to 1:1 Macro.

The Super Multi-Layer Coating reduces flare and ghosting, providing high contrast images.
It is also possible to use this lens with Sigma’s optional APO Tele Converters. Sigma’s own proprietary OS (Optical Stabiliser) function helps with handheld close-up photography and the HSM (Hyper Sonic Motor) ensures quiet and high speed autofocus as well as full-time manual focus capability.

This lens features a splash resistant design for use in harsh conditions and a rounded 9 blade diaphragm creating a smooth blur to the out of focus areas of the image.


Focal length 105mm
Diagonal Angle of view (FF) 23.3º
Maximum aperture F2.8
Minimum aperture F22
Lens Construction • 16 elements / 11 groups
• 1 SLD glass element
• 1 high refractive index SLD element
No. of diaphragm blades 9, rounded
Minimum focus 0.31m
Maximum magnification 1.0x
AF motor type Ring-type Ultrasonic
Image stabilization Yes
Filter diameter • 62mm
• Does not rotate on focusing
Weight TBA
Dimensions 78.3mm x 126.8mm (3.1in x 5.0in)
Lens Mount TBA