Pentax 21977 DA 18-135mm f/3.5-5.6 ED AL (IF) DC WR Lens for Pentax Digital SLR cameras Extended 75X zoom range is ideal for a wide range of shooting conditions Diaphragm blades: 7(rounded).Weather resistant to handle damp, inclement conditions 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