Digital Photography Live

Sigma 105mm f/2.8 EX DG OS HSM Macro Lens

Product Summary


This is a very versatile lens which can be used for the purpose of macro photography as well as a medium telephoto prime lens. the Sigma 105mm f/2.8 EX DG OS HSM Macro lens has a close minimum focusing distance of 12.3” which gives a maximum magnification ratio of 1:1. In that respect this is a true macro lens.

A fast aperture of f/2.8 gives the lens an incredible amount of flexibility to literally freeze action. This lens can be used to shoot everyday moments and also used for the purpose of doing a lot of macro photography as well. Low light photography is also a possibility because of the fast aperture. Sigma’s HSM (Hyper-sonic Motor) (hyper-sonic motor) technology is similar in lines to Canon’s USM technology and offers quiet auto-focusing. A full-time manual focusing override is also provided which ensures that the photographer can easily adjust the focus to his needs.

The lens construction includes a super-low dispersion (SLD) glass element and a high refractive index SLD lens which suppresses much of the lateral chromatic aberrations increasing color saturation. Along with these the lens also comes with super-multi layer coating for reduced ghosts and flares and floating mechanism for the purpose of independent and superior close-up performance.

A total of 16 elements make up the lens arranged in 11 groups. 9 rounded blades make up the lens diaphragm which apart from its wide f/2.8 aperture can also stop down to f/22. The external dimensions of the lens are 3.1” ×5” and weighs 725 grams. The lens takes a filter of specification 62mm. Check also Sigma APO Macro 180mm F2.8 EX DG OS HSM

Sample Images by Sigma 105mm f/2.8 EX OS Macro on Flickr

Product Images


Sigma 105mm f/2.8 EX OS Macro Specifications

Construction 16 Elements in 11 Groups
Angle of View 23.3 degrees
No of Diaphragm Blades 9
Min Aperture f22
Min Focusing Distance 31.2 cm / 12.3 in
Filter Size Diameter 62mm
Max Magnifications 1:1
Compatibility Pentax DSLR Cameras
Dimensions (D x L) 126.4mm x 78.3mm / 5.0 in. x 3.1 in.
Wt 725g / 25.6oz.


More Info

Purchase options

Sigma 105mm f/2.8 EX OS Macro available at Amazon | Adorama | B&H