Review SMC Pentax-DA L 1: 4-5.6 18-50mm DC WR RE | Happy
Pentax smc DA 18-55 mm f/3.5-5.6 AL II review - Build quality - LensTip.com
Amazon.com : PENTAX DA 18-55mm f/3.5-5.6 AL Weather Resistant Lens for Pentax Digital SLR Camera (Discontinued by Manufacturer) : Camera Lenses : Electronics