Sigma pre-Art 50mm f/1.4 with HSM for Canon EF, fast standard at fraction of Canon L pricing.
The Sigma 50mm f/1.4 EX DG HSM for Canon EF is the pre-Art-series fast standard prime that established Sigma's credibility for quality f/1.4 lenses. The EX designation indicates premium build, and the HSM provides fast quiet autofocus with manual override on Canon full-frame bodies.
The f/1.4 provides beautiful subject isolation and low-light capability with the HSM motor for fast, quiet AF. The EX build quality provides above-budget construction, and the DG full-frame coverage ensures compatibility with all Canon EOS bodies from APS-C through full-frame.
Build quality is Sigma EX premium with quality materials. The 50mm f/1.4 EX was Sigma's pre-Art flagship 50mm that proved third-party f/1.4 lenses could compete at a fraction of Canon's 50mm f/1.2L pricing.
The Sigma 50mm f/1.4 EX offers fast standard prime with HSM at budget used pricing versus Canon alternatives. The pre-Art EX provides genuine f/1.4 capability at dramatically lower cost than Canon's own fast 50mm options.