The smc PENTAX DA 18-135mm F3.5-5.6 ED AL (IF) DC WR has an extended 7.5X zoom range is ideal for a wide range of shooting conditions. It is weather resistant to handle damp, inclement conditions. The DA 18-135mm has a compact and lightweight design for easy portability. Direct Current (DC) motor supports quick, quiet autofocus operation. PENTAX Super Protect (SP) coating helps repel dust, water, and grease, making the lens easier to clean. PENTAX Quick Shift focus system allows instant on-the-fly switching from auto to manual focus. An aspherical lens element helps to compensate for spherical aberration to maximize image quality. Equivalent to 27.5-207mm in the 35mm format. Developed specifically for PENTAX digital SLR cameras.