Sigma has announced a smaller, lighter 85mm f/1.4 DG DN Art Lens for full-frame L-mount and Sony E-mount mirrorless cameras. Over the years, Sigma’s Art-series lenses have gained a reputation for both their exacting sharpness and hefty weight. The latest portrait lens, redesigned specifically for mirrorless cameras, dramatically slashes the weight of its previous model from 2.49 to 1.39 lb, making it easier to use handheld for extended periods of time. Similarly, its length has been reduced from 4.97 to 3.7", making it a better fit for the mirrorless format. Despite its condensed package, the new lens maintains the optical qualities that have made the Art lenses so popular, and adds the benefits of a de-clickable aperture ring.
To ensure the image quality expected of an Art lens, the new 85mm uses the latest high refractive index glass to correct for a variety of aberrations and distortion. Its optical design consists of 15 elements, arranged in 11 groups, and includes five Special Low Dispersion (SLD) elements and one aspherical element. Complementing the optics, the fast f/1.4 design also helps to produce the distinctive selective focus and shallow depth-of-field imagery with which the fast 85mm lens is associated.
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