Sigma 30mm f/1.4 EX DC HSM Lens & Filters & Lens Cleaning Kit & 7 Year Warranty for Canon SLR For use with smaller chip APS-c and 4/3 cameras only HSM (Hyper-Sonic Motor) ensures a quiet & high-speed auto focus Aspherical glass elements offer correction for distortion Special Low Dispersion (SLD) & ELD (Extraordinary Low Dispersion)glass provides optimum color correction & sharpness Kit includes: 7 year warranty extension, Opteka 3 Piece Filter kit and a 5 piece lens cleaning kit