Pentax Imaging 02 Standard Zoom Lens for Q-Series Cameras: Technical Information Focal Length: * 5-15mm Magnification: * 0.06x Aperture Range: * f/2.8 to f/4.5 Focus Distance: * 11.8" minimum Filter Attachment Diameter: * 40.5mm Lens Construction: * 8 elements in 7 groups Viewing Angle: * 76 - 29 degrees Physical Characteristics Dimensions: * 1.9" x 1.9" Compatibility: * Q-Series cameras