Sigma 105mm f/1.4 DG HSM Art Lens for Nikon F

The Sigma 105mm f/1.4 DG HSM Art is a large-aperture telephoto prime lens designed for Nikon F-mount full-frame DSLR cameras, delivering an exceptionally fast f/1.4 maximum aperture that has earned it a reputation as one of the most striking portrait lenses in Sigma’s acclaimed Art series lineup. Its combination of extreme speed, focal length, and optical performance has made it a favorite among portrait and fine art photographers seeking dramatic subject separation.

The lens’s standout characteristic is its ability to produce extraordinarily shallow depth of field, often described for its smooth, creamy bokeh that has led some photographers to nickname it the “Bokeh Master.” This makes it especially well-suited for portraiture, where its 105mm focal length and f/1.4 aperture combine to isolate subjects beautifully while compressing backgrounds into soft, pleasing blur. The lens’s complex optical formula, built with Sigma’s Art-series standards, includes multiple special low dispersion (SLD) elements to minimize chromatic aberration and maintain high contrast and sharpness even when shooting wide open.

Autofocus is handled by Sigma’s Hyper Sonic Motor (HSM), providing fast, quiet, and accurate focusing performance suited to both stills photography and controlled video work. Given the lens’s shallow depth of field at f/1.4, precise autofocus is essential, and the HSM system is engineered to deliver the accuracy needed to nail focus even at extremely wide apertures. A rounded 9-blade aperture diaphragm further enhances the quality of out-of-focus rendering, contributing to the lens’s celebrated bokeh characteristics.

Built to Sigma’s Art-series standards, the lens features a robust construction with a brass bayonet mount and a design optimized for durability alongside optical performance. Its substantial size and weight reflect the engineering required to achieve such a fast aperture at this focal length, making it a lens best suited for photographers who prioritize image quality and creative control over portability. As part of Sigma’s Global Vision lineup, it also maintains compatibility with Sigma’s USB Dock for firmware updates and fine-tuning of autofocus parameters.

Specs:
– Focal length: 105mm
– Maximum aperture: f/1.4
– Lens mount: Nikon F (full-frame)
– Autofocus: Hyper Sonic Motor (HSM)
– Aperture blades: 9, rounded
– Lens series: Art (Sigma Global Vision)
– Compatibility: Sigma USB Dock for firmware/AF calibration