| Telephoto lenses that have a Pentax SDM focus motor | | | | "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 | Focus motor | Pentax SDM | | | Aperture | f/2.8 | | | | | Zoom range | 2.7x | | | Max focal length | 135 mm | | | | | Min focal length | 50 mm | | | Length | 137 mm | | | | | Fixed aperture | Yes | | | Weight | 0.7 kg | | | | | | | | | | | Focus motor | Pentax SDM | | | Aperture | f/3.5 | | | | | Zoom range | 15x | | | Max focal length | 270 mm | | | | | Min focal length | 18 mm | | | Length | 89 mm | | | | | Fixed aperture | No | | | Weight | 453 g | | | | | | | | "I've used this lens now for about 1200 shots of lacrosse games taken in the evening/night under the lights, bright sun and cloudy days. Great resolution when the focus is spot on." bhphotovideo.com | Focus motor | Pentax SDM | | | Aperture | f/4 | | | | | Zoom range | 4.2x | | | Max focal length | 250 mm | | | | | Min focal length | 60 mm | | | Length | 168 mm | | | | | Fixed aperture | Yes | | | Weight | 1 kg | | | | | | | | | | "Unbelievable image clarity with zero distortion. Impressive build and quality workmanship." bhphotovideo.com | Focus motor | Pentax SDM | | | Aperture | f/2.8 | | | | | Zoom range | 1x | | | Max focal length | 200 mm | | | | | Min focal length | 200 mm | | | Length | 135 mm | | | | | Fixed aperture | n/a | | | Weight | 0.8 kg | | | | | | | | "Stellar performer. Very sharp, and works well with in-body stabilisation, which is more noticable/effective at this focal length. Suprisingly good bokeh! This has now become my default lens bushwalking, with a shorter macro and wide prime in the bag. Very versatile thanks to close minimum focus distance. Not as big as imagined. About as heavy as expected (not light, but probably good for this class of lens). Overall GREAT and well worth the investment." bhphotovideo.com | Focus motor | Pentax SDM | | | Aperture | f/4 | | | | | Zoom range | 1x | | | Max focal length | 300 mm | | | | | Min focal length | 300 mm | | | Length | 183 mm | | | | | Fixed aperture | n/a | | | Weight | 1.1 kg | | | | | | | | | | | Focus motor | Pentax SDM | | | Aperture | f/2.8 | | | | | Zoom range | 2.7x | | | Max focal length | 135 mm | | | | | Min focal length | 50 mm | | | Length | n/a | | | | | Fixed aperture | Yes | | | Weight | 0.7 kg | | | | | | | |