Pentax SMC DA L 18-50mm f/4.0-5.6 DC WR RE Lens (White) (Bulk Packaging) K Mount Lens/APS-C Format 27.5-76.5mm (35mm Equivalent) Aperture Range: f/4.0-5.6 to 22-32 Aspherical Elements Super Protect Coatings Direct Current AF Motor Quick-Shift Focus All Weather-Resistant Construction Retractable Design Rounded 7-Blade Diaphragm