| Pentax Zoom Landscape lenses | | | | | Zoom range | 7.5x | | | Length | 76 mm | | | | | Fixed aperture | No | | | Diameter | 74 mm | | | | | Max focal length | 135 mm | | | Weight | 405 g | | | | | Aperture | f/3.5 | | | Min focal length | 18 mm | | | | | | | | | | | | Great telephoto lens | | 270 mm | | | Zoom range | 15x | | | Length | 89 mm | | | | | Fixed aperture | No | | | Diameter | 76 mm | | | | | Max focal length | 270 mm | | | Weight | 453 g | | | | | Aperture | f/3.5 | | | Min focal length | 18 mm | | | | | | | | | Zoom range | 5.3x | | | Length | 94 mm | | | | | Fixed aperture | No | | | Diameter | 78 mm | | | | | Max focal length | 85 mm | | | Weight | 488 g | | | | | Aperture | f/3.5 | | | Min focal length | 16 mm | | | | | | | | | | | Zoom range | 2.8x | | | Length | 41 mm | | | | | Fixed aperture | No | | | Diameter | 71 mm | | | | | Max focal length | 50 mm | | | Weight | 158 g | | | | | Aperture | f/4 | | | Min focal length | 18 mm | | | | | | | | "This is absolutely the lens I needed to round out my Pentax K10 camera gear." bhphotovideo.com | Fixed aperture | | The same maximum aperture at all focal lengths | | | Zoom range | 2x | | | Length | 86 mm | | | | | Fixed aperture | Yes | | | Diameter | 84 mm | | | | | Max focal length | 24 mm | | | Weight | 431 g | | | | | Aperture | f/4 | | | Min focal length | 12 mm | | | | | | | | | | "Great lens for everyday use... Fast and sharp.... The price was nice also" bhphotovideo.com | Fixed aperture | | The same maximum aperture at all focal lengths | | | Zoom range | 3.1x | | | Length | 99 mm | | | | | Fixed aperture | Yes | | | Diameter | 84 mm | | | | | Max focal length | 50 mm | | | Weight | 0.6 kg | | | | | Aperture | f/2.8 | | | Min focal length | 16 mm | | | | | | | | "The lens is well-made, the SDM focusing is fast and quiet (used on a Pentax K20D), images are sharp throughout the zoom range, the bokeh is pleasing, and the lens is weatherproof" bhphotovideo.com | Fixed aperture | | The same maximum aperture at all focal lengths | | | Zoom range | 4.1x | | | Length | 94 mm | | | | | Fixed aperture | Yes | | | Diameter | 76 mm | | | | | Max focal length | 70 mm | | | Weight | 485 g | | | | | Aperture | f/4 | | | Min focal length | 17 mm | | | | | | | | | | "This lens is workhorses, very nice contrast, fast autofocus, WR is very nice, just like water proof, I took alot pictures during raining, white water rafting, biking." bhphotovideo.com | Zoom range | 3.1x | | | Length | 69 mm | | | | | Fixed aperture | No | | | Diameter | 69 mm | | | | | Max focal length | 55 mm | | | Weight | 230 g | | | | | Aperture | f/3.5 | | | Min focal length | 18 mm | | | | | | | |