Pentax 15mm f/4.0 DA Wide Angle Limited Series Autofocus Lens. Condition Description: Used Like New (Display) – Box is damaged. Compact wide angle limited lens. High-grade aluminum construction of the lens barrel, hood, and cap. Quick-shift Focus System for instant switching from auto to manual focus. PENTAX SP coating protects the exposed lens elements. Extra low Dispersion glass and a hybrid aspherical lens element improve contrast and clarity. Photo Filter Thread Size. USED (Display) Like New – Box is damaged.