Sigma 20mm f/1.4 DG HSM Art Series Lens

$1,224.00
To offer an ultra-wide-angle 20mm focal length and F1.4 brightness at wide-open aperture, this lens incorporates a large double aspherical lens 59mm in diameter. Lenses of this type had been considered extremely difficult to manufacture, but SIGMA took on the challenge to realize an F1.4 ultra-wide-angle lens that fulfills the strict performance requirements of the SIGMA Art line.

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$1,224.00
SKU: #412
 

Accessories

Product Description

To offer an ultra-wide-angle 20mm focal length and F1.4 brightness at wide-open aperture, this lens incorporates a large double aspherical lens 59mm in diameter. Lenses of this type had been considered extremely difficult to manufacture, but SIGMA took on the challenge to realize an F1.4 ultra-wide-angle lens that fulfills the strict performance requirements of the SIGMA Art line. What made this breakthrough possible were SIGMA’s advanced manufacturing technologies, which the company has developed over time by producing a wide range of ultra-wide-angle and large-aperture lenses. For example, milestone lenses such as SIGMA 12-24mm F4.5-5.6 EX DG ASPHERICAL HSM, SIGMA 8-16mm F4.5-5.6 DC HSM, and SIGMA 18-35mm F1.8 DC HSM | Art were completely original products that helped SIGMA develop outstanding design and production know-how and its current high-precision, high-efficiency production system. In turn, these advances made possible the new SIGMA 20mm F1.4 DG HSM | Art. Moreover, SIGMA’s advanced optical design minimizes distortion, transverse chromatic aberration, sagittal coma flare, and the reduction of brightness toward the edges of the image. Delivering top performance even at wide-open aperture, this lens can be considered the culmination of SIGMA’s Art line.

Distortion is a common issue in wide-angle lenses, and it is not possible to correct it simply by changing the aperture value. For this reason, a lens must be designed from the start to minimize this issue. By adjusting the incidence angle of light starting with the first lens element and incorporating optimally positioned aspherical glass elements, the SIGMA 20mm F1.4 DG HSM | Art lens minimizes distortion throughout the entire image.

This lens minimizes chromatic aberrations, a common issue in large-aperture ultra-wide-angle lenses. It features two FLD (“F” Low Dispersion)* glass and five SLD (Special Low Dispersion) glass elements to minimize transverse chromatic aberration, which is mainly visible around the edge of the image. The optimized lens power distribution helps minimize axial chromatic aberration. As a result, this lens delivers high image quality in every situation without color smearing, and its rendering performance is consistently sharp with high contrast.

 

Specifications

 

Lens construction15 elements in 11 groups
Minimum apertureF16
Angle of view (35mm equivalent)94.5°
Minimum focusing distance27.6 cm / 10.9 in.
Dimensions (diameter x length)φ90.7mm x 129.8mm / 3.6 in. x 5.1 in.
Number of diaphragm blades9 (Rounded diaphragm)
Maximum magnification ratio1:7.1
Weight950 g / 33.5 oz.

 

Additional information

In Depth Sigma 20mm f/1.4 DG HSM Nikon Art Series
Brand Sigma
Lens Mount No
Sensor Size No
Model #412
Specifications
Performance
Focal Length 20mm
Aperture Maximum: f/1.4
Minimum: f/16
Camera Mount Type Sigma SA
Format Compatibility 35mm Film / Full-Frame Digital Sensor
APS-C
Angle of View 94.5°
Minimum Focus Distance 10.9" (27.69 cm)
Maximum Reproduction Ratio 1:7.1
Elements/Groups 15 / 11
Diaphragm Blades 9, Rounded
Features
Autofocus Yes
Physical
Filter Thread None
Dimensions (DxL) Approx. 3.57 x 5.11" (90.7 x 129.8 mm)
Weight 2.09 lb (950 g)
Packaging Info
Package Weight 2.85 lb
Box Dimensions (LxWxH) 7.0 x 4.9 x 4.7"
What's in the box

Sigma 20mm f/1.4 DG HSM Art Lens for Sigma SA

  • LC907-01 Cover Lens Cap
  • Rear Cap LCR II for Sigma Mount Lenses

Specifications

Performance
Focal Length 20mm
Aperture Maximum: f/1.4
Minimum: f/16
Camera Mount Type Sigma SA
Format Compatibility 35mm Film / Full-Frame Digital Sensor
APS-C
Angle of View 94.5°
Minimum Focus Distance 10.9" (27.69 cm)
Maximum Reproduction Ratio 1:7.1
Elements/Groups 15 / 11
Diaphragm Blades 9, Rounded
Features
Autofocus Yes
Physical
Filter Thread None
Dimensions (DxL) Approx. 3.57 x 5.11" (90.7 x 129.8 mm)
Weight 2.09 lb (950 g)
Packaging Info
Package Weight 2.85 lb
Box Dimensions (LxWxH) 7.0 x 4.9 x 4.7"

What's in the box

Sigma 20mm f/1.4 DG HSM Art Lens for Sigma SA

  • LC907-01 Cover Lens Cap
  • Rear Cap LCR II for Sigma Mount Lenses

Warranty

Manufacturer Warranty

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