This Pentax 50mm F/2.8 Bundle comes with $49.95 worth of free accessories including a New Leaf PLUS 3yr Lens Warranty and Shipping is free!
The PENTAX smc P-D FA 50mm F2.8 macro is designed specifically for digital cameras. It utilizes curvature and positioning of optical elements to virtually eliminate flare and ghosting for clear, high-quality images particularly important to digital photography. This versatile lens can also be used as a telephoto lens and features our acclaimed multi-layer coating to lower surface reflection, reduce ultraviolet rays, and deliver clear, high-contrast images.
One reason why the Pentax 50mm F/2.8 is popular is because of its Fast / accurate auto-focus