As the first wide-angle AF lens with f/1.2 for full-frame L-mount, the Sigma Art 35mm delivers extreme light gathering and smooth bokeh from its 11-blade diaphragm. Its weather-resistant metal barrel and 1090g construction feel durable, while the HSM autofocus ensures quick, silent performance. Best suited for portrait photographers who need shallow depth of field in low light without sacrificing sharpness from its 3 aspherical and 3 ED elements.