The SMC PENTAX-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 colour 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.