|DG||The lens is designed for full-frame SLR cameras but can be also used on APS-C SLR cameras.|
|HSM||The lens is equipped with ultrasonic motor to provide very fast and virtually silent autofocus. Learn more|
|| A||Belongs to Art series lenses.|
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|Maximum format:||35mm full frame|
|Diagonal angle of view:||84°-63.4° (35mm full frame)|
|70.7°-51.9° (Canon APS-H)|
|59.1°-42.5° (Canon APS-C)|
|61°-44° (Nikon APS-C)|
|54.8°-39.1° (Sigma APS-C)|
|Lens construction:||18 elements in 13 groups, including:|
|Number of blades:||9|
|Closest focusing distance:||28 cm|
|Type of autofocus motor:||Ultrasonic (Canon EF)|
|Ultrasonic (Nikon F)|
|Ultrasonic (Sigma SA)|
|Full-Time Manual Focus:||Yes|
|Weight:||SA: 940 g|
|Maximum diameter x Length:||SA: Ø87.6 x 122.7 mm|
|Materials:||High-quality plastic barrel (TSC)|
|Filter size:||82 mm|
Design and Features
For information on history of Sigma and development of Sigma Global Vision line please refer to the article dedicated to Sigma 35mm F/1.4 DG HSM | A.
World's first constant f/2 aperture full-frame wide-angle zoom lens.
The lens barrel is heavy, made of high-quality plastic (TSC). The lens mount is metallic. Please refer to the article dedicated to Sigma 35mm F/1.4 DG HSM | A for more information about TSC. In terms of build quality and design Sigma Global Vision line is a new direction for the company: cosmetically the lens differs from the earlier models and looks attractive.
The lens has rather narrow focal range. Formally it is the disadvantage, however in practice it contributes to a good compensation of optical aberrations and equally high image quality at the entire focal range.
The lens features AF/MF focus mode switch.
|AF||Autofocus mode with Full-Time Manual Focus.|
|MF||Manual focus mode.|
The lens uses front filters with standard size of 82 mm which are easy to find. However, filters of such size are more expensive and mainly used with professional lenses.
The filter thread does not rotate during focusing which allows convenient use of different types of filters (including but not limited to polarizing and gradient).
The lens is compatible with Sigma USB dock, an optional accessory which allows to connect the lens to a computer and customize its operation via Sigma Optimization Pro software. The customization for this lens includes updates of firmware via the Internet, autofocus microadjustments for 4 focal lengths and 4 shooting distances and setting the amount of rotation of the focusing ring which triggers FTM focusing.
Sigma also offers paid Mount Conversion Service (MCS) for this lens. With MCS, the mount of the lens can be converted to Canon EF, Nikon F or Sigma SA. Teleconverters, USB docks and other accessories for this lens are not eligible for MCS.
|Camera:||Canon EOS 5D mark III|
|Sensor size:||36×24 mm|
|Distortion at 24 mm:||-3.24 %|
|Distortion at 35 mm:||+0.77 %|
|Vignetting at 24 mm F/2:||-2.56 EV|
|Vignetting at 35 mm F/2:||-2.31 EV|
|Sensor size:||35.9×24 mm|
|Distortion at 24 mm:||-2.6 %|
|Distortion at 35 mm:||+0.7 %|
|Vignetting at 24 mm F/2:||-1.87 EV|
|Vignetting at 35 mm F/2:||-1.81 EV|
|Prime lenses for Canon EOS DSLR cameras|