Sigma Art EF 20mm f/1.4

General Details
  • Outstanding Edge to Edge Performance
  • Individually inspected Hand crafted in Japan
Description

The Sigma 20mm 1.4 DG HSM Art is a state of the art wide-angle prime lens designed for Full Frame cameras but will work with APS-C sensors as well.  The latest optical design allows for the utmost in image quality with careful attention paid to edge to edge performance. Through decades of experience in lens design and Sigma Global Vision lens manufacturing, the 20mm incorporates both “F” Low Dispersion (FLD) glass, and five Special Low Dispersion (SLD) glass in a design of 15 elements in 11 groups. The combination of advanced optics and optimized lens power distribution minimizes spherical aberration, axial chromatic aberration and field curvature, producing outstanding image quality. With class leading performance, this lens is ideal for videography. As with all Global Vision lines, the 20mm will be tested using the proprietary “A1” measuring system ensuring the highest standard of operation.

In the Case
  • Sigma Art EF 20mm f/1.4
  • Lens cap
  • Body cap
  • Flexible gear ring with hard stops

 

Technical Specifications

LENS CONSTRUCTION

Lens Construction

SPECIFICATIONS

Lens Construction 15 elements in 11 groups
Angle of View (35mm) 94.5°
Number of Diaphragm Blades 9 (Rounded diaphragm)
Minimum Aperture F16
Minimum Focusing Distance 27.6 cm / 10.9 in.
Filter Size (mm)  –
Maximum Magnifications 1:7.1
Dimensions
(Diameter x Length)
φ90.7mm x 129.8mm / 3.6 in. x 5.1 in.
Weight 950 g / 33.5 oz.
Corresponding Mounts
Sigma HSM
DG
Nikon HSM
DG
Canon HSM
DG
HSM -Hyper-Sonic Motor
DG – DG for Digital Full Frame and APS-C
* The appearance, specifications, and the like of the product are subject to change for improvement without notice.

GEOMETRICAL MTF CHART

Geometrical MTF

DIFFRACTION MTF CHART

Diffractional MTF

EFFECTIVE DISTORTION

Effective Distortion

RELATIVE DISTORTION

>Relative distortion

VIGNETTING

Vignetting

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