Sigma 20mm f/1.4 DG HSM Art lens: first sample photos and reviews

Sigma 20mm f:1.4 DG HSM Art lens sample photos
The German website d-pixx posted the first sample pictures taken with the new Sigma 20mm f/1.4 DG HSM Art lens that is scheduled to start shipping this month in the US (November 15ht according to Adorama).

Sigma 20mm f/1.4 DG HSM Art lens additional information:

Specifications

Lens construction 15 elements in 11 groups
Minimum aperture F16
Angle of view (35mm equivalent) 94.5°
Minimum focusing distance 27.6 cm / 10.9 in.
Dimensions (diameter x length) φ90.7mm x 129.8mm / 3.6 in. x 5.1 in.
Number of diaphragm blades 9 (rounded diaphragm)
Maximum magnification ratio 1:7.1
Weight 950 g / 33.5 oz.

Features

  • A Hyper Sonic Motor (HSM) that ensures a silent, high-speed AF function. Smoother AF is achieved when the this AF algorithm is optimized
  • A nine-blade, rounded diaphragm creates an attractive blur to the out-of-focus areas of the image
  • A brass bayonet mount of highly precise and durable construction to enhance mount’s strength and long-term wear resistance

MTF charts

Sigma-20mm-f1.4-DG-HSM-Art-lens-MTF-chart-550x235

Lens design

Sigma-20mm-f1.4-DG-HSM-Art-lens-design

Chromatic aberration

Sigma-20mm-f1.4-DG-HSM-Art-lens-chromatic_aberration

Vignetting

Sigma-20mm-f1.4-DG-HSM-Art-lens-vignetting

Distortion

Sigma-20mm-f1.4-DG-HSM-Art-lens-distortion

 

Pros and cons of the Sigma 20mm f/1.4 DG HSM Art lens from Lenstip:

Pros:

  • unique parameters,
  • solid and stylish casing,
  • brilliant image quality in the frame centre,
  • excellent resolution on the edge of the APS-C/DX,
  • acceptable image quality on the edge of full frame,
  • slight lateral chromatic aberration,
  • sensible correction of spherical aberration,
  • lack of serious distortion problems,
  • slight vignetting on the APS-C/DX sensor,
  • silent and quick autofocus,
  • excellent parameters/price and performance/price index.

Cons:

  • noticeable coma,
  • very high vignetting on full frame,
  • work against bright light could have been better.
This entry was posted in Sigma and tagged . Bookmark the permalink. Trackbacks are closed, but you can post a comment.
  • Back to top