| Pentax K Lenses that are 10mm or wider and have a f/2.8 or faster aperture | | | | | Min focal length | 10 mm | | | Diameter | 86 mm | | | | | Aperture | f/2.8 | | | Length | 78 mm | | | | | Fisheye | No | | | Weight | 0.6 kg | | | | | Auto focus | No | | | Max focal length | 10 mm | | | | | | | | | | | Min focal length | 10 mm | | | Diameter | 86 mm | | | | | Aperture | f/2.8 | | | Length | 105 mm | | | | | Fisheye | No | | | Weight | 0.6 kg | | | | | Auto focus | No | | | Max focal length | 10 mm | | | | | | | | | Fisheye | | Extremely wide circular images | | | Supports autofocus | | Easier to use | | | Min focal length | 10 mm | | | Diameter | 76 mm | | | | | Aperture | f/2.8 | | | Length | 84 mm | | | | | Fisheye | Yes | | | Weight | 476 g | | | | | Auto focus | Yes | | | Max focal length | 10 mm | | | | | | | | | | | Fisheye | | Extremely wide circular images | | | Supports autofocus | | Easier to use | | | Min focal length | 4.5 mm | | | Diameter | 76 mm | | | | | Aperture | f/2.8 | | | Length | 79 mm | | | | | Fisheye | Yes | | | Weight | 470 g | | | | | Auto focus | Yes | | | Max focal length | 4.5 mm | | | | | | | |