Sigma 35mm f2 DG DN I C for L-MountThis light, compact lens is designed with the highest level of optical performance to create stunning results. Ideal for street and astro photography, environmental portraits, wedding and video, it is for photographers and film makers who value the experience of taking a picture just as much as the quality of the final result. New standards of optical performance for the Contemporary lineDespite its small size, no compromise has been made on the optical performance of the SIGMA I series 24mm F3.5 DG DN Contemporary. It is capable of capturing the finest details when shooting on high resolution full-frame cameras, and it does so across the entire frame, which means photographers can rely on edge-to-edge sharpness at all apertures when shooting wide-angle scenes. The 35mm F2 DG DN Contemporary brings to the table the highest level of optical performance even at its maximum aperture of F2. Axial chromatic aberration, a point of particular concern with a bright lens, is corrected with SLD glass. The placement of high-refractive index elements provides effective correction of various types of aberration, while keeping the amount of glass used to a minimum. The use of three high-precision glass-molded aspherical lenses was made possible thanks to advanced production technology at the Aizu factory, SIGMAs only production site. These elements provide correction of spherical aberration and field curvature, and the fluctuation of aberration at the time of focusing. The lens design also provides a very good correction of sagittal coma aberration, making it capable of capturing details fine enough for it to be used for night sky photography. Attractive bokehThe lens renders very attractive bokeh, and out-of-focus highlights are near-circular, even at the edges of the frame.