Prime Standard LensIdeal For Portrait, Still Life Or Low-light PhotographyF/1.4 ApertureFocal Length: 84.5mm In 35mm FormatExtended 7.5X zoom range is ideal for a wide range of shooting conditions. 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.