- Model name: Sigma 105mm f/2.8 EX DG OS HSM Macro Lens
- Focus Type: Autofocus / Manual
- Format : Full Frame / APS-C / Crop Sensor
- Mounts: Canon | Nikon | Sigma
- Purchase options: Amazon | Adorama | B&H
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
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 Focusing Distance||31.2 cm / 12.3 in|
|Filter Size||Diameter 62mm|
|Compatibility||Pentax DSLR Cameras|
|Dimensions (D x L)||126.4mm x 78.3mm / 5.0 in. x 3.1 in.|
|Wt||725g / 25.6oz.|