Sigma 35mm F1.4 DG HSM "Art"
In late 2012, Sigma re-structured its lens lineup and announced that its future lenses would each be part of one of three new product lines: "Contemporary" for affordable consumer lenses, "Sport" for fast telephoto lenses, or "Art" for high-performance primes and zooms.
Exceptional bokeh, Razor-sharp, Optically-superb on APS-C, Unrivaled fast F1.4 aperture (vs; the Pentax lens lineup, Silent autofocus, Perfect for portraits, landscapes, or close-ups, Solid build quality, Professional-grade performance, 4-year extended warranty, Cheaper than the Pentax FA 31mm ($899...
Much bigger than necessary (for APS-C; Heavy (665g; Long and bulky (with hood; Smaller/cheaper alternatives exist for APS-C cameras; No USB dock available for Pentax; No weather sealing