The development of this lens was based on the smc PENTAX-FA35 mmF2AL — multi-purpose, wide-angle lens used on film-format SLR cameras — while conducting a thorough review of the lens coatings. The high-grade, multi-layer HD Coating has been applied to the optical elements to produce high-contrast images with edge-to-edge sharpness and free of flare and ghost images; the highly stain-repellent SP coating has been applied to the front surface to improve the lens’s usability in outdoor locations. The exterior has been totally redesigned to match the design of the latest PENTAX K-mount digital SLR models, while its compact, portable body makes it a perfect everyday-use lens. Latest HD coating Minimize flare and ghost SP coating to repel stains.