Sigma Art 20mm F/1.4 DG HSM Full Frame Lens for Nikon

Sigma Art 20mm F/1.4 DG HSM Full Frame Lens for Nikon

The lens is in mint condition.

Sigma 20mm f/1.4 DG HSM Art lens—a wide-angle prime that combines optical prowess with a generous aperture.

Sigma 20mm f/1.4 DG HSM Art: A Detailed Overview

1. Aperture and Viewing Angle:

   • The Sigma 20mm f/1.4 Art lens is a marvel of engineering, offering an ultra-wide 20mm focal length.
   • Its impressive f/1.4 aperture allows for exceptional low-light performance and beautiful background blur (bokeh).
   • With a viewing angle of approximately 94.5 degrees, it captures expansive scenes with ease.

2. Optical Construction:

   • Inside its robust barrel, the lens houses 15 elements arranged in 11 groups.
   • Among these elements are two top-grade FLS (Fluorite Low Dispersion) elements, which minimize chromatic aberrations.
   • Additionally, five SLD (Special Low Dispersion) elements contribute to outstanding sharpness and contrast.

3. Aspherical Element:

   • The Sigma 20mm f/1.4 Art lens achieves its remarkable f/1.4 aperture by incorporating a large-diameter double aspherical element at the front of the optical path.
   • This design choice posed a significant manufacturing challenge, but it pays off in exceptional image quality.

4. Image Quality:

   • The lens renders scenes with clarity and minimal distortion, making it ideal for landscapes, architectural photography, and astrophotography.
   • Color fringing is kept in check, thanks to the advanced optical elements.

5. Autofocus and Silent Motor:

   • The Hyper Sonic Motor (HSM) ensures fast and silent autofocus, allowing you to capture fleeting moments without disturbing the peace.
   • Whether you're shooting cityscapes or capturing the Milky Way, the lens responds swiftly.

6. Build and Weather Sealing:

   • The Sigma Art series is known for its build quality, and this lens is no exception.
   • However, note that weather-sealing is not featured, so be cautious in adverse conditions.

7. Filter Size and Hood:

   • Interestingly, the Sigma 20mm f/1.4 Art lens does not have a filter attachment thread. No circular filters here!
   • The integral fixed hood provides some protection and helps reduce flare.

8. Dimensions and Weight:

   • The lens measures 91mm in diameter and 130mm in length.
   • It's a substantial piece of glass, weighing in at 950g (approximately 2.1 lbs).

9. Creative Possibilities:

   • Use this lens to capture sweeping vistas, dramatic architecture, or the star-studded night sky.
   • Its wide aperture allows for creative depth of field control, emphasizing foreground elements against expansive backgrounds.

10. Verdict:

    • The Sigma 20mm f/1.4 DG HSM Art lens is a unique offering—a full-frame 20mm lens with an f/1.4 aperture.
    • Its combination of wide-angle view and fast aperture makes it a versatile tool for photographers who crave both creativity and technical excellence.

In summary, the Sigma 20mm f/1.4 Art lens is a gateway to expansive visual storytelling. Whether you're chasing sunsets, exploring urban jungles, or venturing into the cosmos, this lens invites you to see the world differently.