| Pentax Lenses that have a generic focus motor, have a 300mm or longer focal length and have a f/4 or faster aperture | | | | | Max focal length | 300 mm | | | Length | 112 mm | | | | | Aperture | f/4 | | | Diameter | 71 mm | | | | | Focus motor | Generic motor | | | Auto focus | Yes | | | | | Weight | 466 g | | | Zoom range | 5.5x | | | | | | | | | |