| Pentax K-7 Lenses made by Pentax that have a Pentax SDM focus motor and have a f/2.8 or faster aperture | | | | "Great lens for taking pictures of the kids, fast, smooth zoom and I don't have to be in their face to get a shot, very sharp pictures..." bhphotovideo.com | Aperture | f/2.8 | | | Length | 137 mm | | | | | Focus motor | Pentax SDM | | | Zoom range | 2.7x | | | | | Min focal length | 50 mm | | | Diameter | 76 mm | | | | | Max focal length | 135 mm | | | Weight | 0.7 kg | | | | | | | | | | "I love the lens in almost all ways. It's sharp, fast focusing, needs very little light in F1.4 and the quick shift to manual focus is really OK to have." bhphotovideo.com | Aperture | f/1.4 | | | Length | 66 mm | | | | | Focus motor | Pentax SDM | | | Zoom range | 1x | | | | | Min focal length | 55 mm | | | Diameter | 71 mm | | | | | Max focal length | 55 mm | | | Weight | 375 g | | | | | | | | "Great construction, versatile and great image quality, especially the diaphragm closing a little more than 16mm focal length." bhphotovideo.com | Aperture | f/2.8 | | | Length | 99 mm | | | | | Focus motor | Pentax SDM | | | Zoom range | 3.1x | | | | | Min focal length | 16 mm | | | Diameter | 84 mm | | | | | Max focal length | 50 mm | | | Weight | 0.6 kg | | | | | | | | | | "Unbelievable image clarity with zero distortion. Impressive build and quality workmanship." bhphotovideo.com | Aperture | f/2.8 | | | Length | 135 mm | | | | | Focus motor | Pentax SDM | | | Zoom range | 1x | | | | | Min focal length | 200 mm | | | Diameter | 84 mm | | | | | Max focal length | 200 mm | | | Weight | 0.8 kg | | | | | | | | | Aperture | f/2.8 | | | Length | n/a | | | | | Focus motor | Pentax SDM | | | Zoom range | 2.7x | | | | | Min focal length | 50 mm | | | Diameter | n/a | | | | | Max focal length | 135 mm | | | Weight | 0.7 kg | | | | | | | | | |