Sigma 105mm f1.4 DG HSM Art Lens for Canon

105mm Filter Size f/1.4 Aperture N/A Stabilized EF Mount The “Bokeh Master” Optical system delivering unsurpassed f/1.4 performance Exceptional peripheral brightness Dust and splash-proof structure Compatible with Canon Lens Aberration Correction Outstanding wide-aperture, mid-telephoto performance with F1.4 brightness at maximum aperture, this lens incorporates 17 optical elements in 12 groups, an uncommonly large number of elements for a prime lens.  By including three FLD glass elements, two SLD glass elements, and one aspherical lens element, the optical system minimizes axial chromatic aberration to deliver extremely high resolution along with ample peripheral light volume. Like SIGMA’s Sports line lenses, the 105mm F1.4 DG HSM | Art features a highly effective dust- and splash-proof structure with special sealing at the mount connection (with exception of the Sigma mount), manual focus ring, cover connection, and other areas, allowing photographers to work