Photographing landscapes in low light, shooting night skies or street photography in low light is not very easy. You need to increase the ISO, which in turn increases digital noise. Sigma’s 28 mm f/1.4 DG HSM Art lens, with its ‘fast’ f/1.4 aperture, comes to the rescue.
Design & Build Quality
The Sigma 28 mm f/1.4 DG HSM Art lens is designed for professional use and feels solid in the hands. The lens, made in Japan, uses metal and engineering plastic in the outer shell. Designed for full-frame cameras, the lens is heavy (865 g). It is weather sealed and the front element offers a protective coating that repels water droplets sticking to it. The lens mount is made of metal. The filter thread has a diameter of 77 mm. Our review lens had a Canon mount.
Like all Sigma lenses, and especially the Art series, the 28 mm f/1.4 DG HSM Art lens is beautifully crafted. It is constructed using 17 elements in 12 groups that include two FLD (F-Low Dispersion, which is equivalent to Fluorite glass) elements, three SLD (Special Low Dispersion) elements, and three Aspherical elements. These exotic glass elements and a Super Multi Coating that is applied to the elements combine to provide better contrast & color and also offer superior control over chromatic aberrations, thus improving overall image quality. The lens also offers an electro-magnetic aperture for greater accuracy