Best Pick

Sigma Contemporary 20mm f/2 DG 20mm

79.4 Macro Score
20mmf/2L-MountWeather Sealed
Why we recommend this

The f/2 maximum aperture and 13-element optical design with aspherical and ED glass deliver strong low-light performance and sharpness in a compact 370g body. Its all-metal, weather-sealed I Series construction and tactile aperture ring provide a premium handling experience rare at this size. This lens is best for environmental portrait and astrophotography shooters who need a fast, ultra-wide prime that won't weigh down a kit.

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Great Alternatives

These options also score highly and may better suit your specific needs

Sigma Art AFG9C0 85mm

44.3 Macro Score
85mmf/16L-MountWeather Sealed
Why we recommend this ▼

Featuring an f/1.2 maximum aperture and dual HLA-driven autofocus, this 85mm prime lens delivers razor-thin depth of field and fast, silent focusing for L-Mount portraits. Its 14-element optical design maintains sharpness wide open, with a 9-blade diaphragm rendering smooth bokeh. Portrait photographers seeking uncompromising subject isolation will find it ideal, though the 1130g weight limits travel use.

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