The PENTAX smc P-DA 14mm F2.8 ED (IF) is designed to be used with fully automated cameras. It incorporates a high-refraction extra low dispersion (ED) glass element to produce a high-resolution high-contrast image with true-to-life color rendition and features an internal focus system to make focusing smoother and faster. Like all PENTAX lenses this lens is treated with the acclaimed smc coating for maximum light transmission sharp definition and high contrast images.