PENTAX DA 18-55mm f/3.5-5.6 AL Weather Resistant Lens for Pentax Digital SLR Camera (Discontinued by Manufacturer) Weather-resistant to handle damp, inclement conditions. Standard 3X zoom focal range for a wide range of shooting applications. The PENTAX-original SP (Super Protect) coating repels dust, water and grease to keep your lens clean and your image quality at its peak. The PENTAX-original Quick-Shift Focus System allows instant switching from autofocus to manual focus operation. The focal length is equivalent to 27mm-82.5mm in the 35mm format.