| | Pentax Zoom Landscape lenses for less than $400 | | |  | | | Fixed aperture | No | | | Aperture | f/3.5 | | | | | | | Zoom range | 7.5x | | | Weight | 405 g | | | | | | | Max focal length | 135 mm | | | Diameter | 74 mm | | | | | | | Length | 76 mm | | | Min focal length | 18 mm | | | | | | | | | | |  | | | Fixed aperture | No | | | Aperture | f/4 | | | | | | | Zoom range | 2.8x | | | Weight | 158 g | | | | | | | Max focal length | 50 mm | | | Diameter | 71 mm | | | | | | | Length | 41 mm | | | Min focal length | 18 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 | | | | Fixed aperture | Yes | | | Aperture | f/4 | | | | | | | Zoom range | 4.1x | | | Weight | 485 g | | | | | | | Max focal length | 70 mm | | | Diameter | 76 mm | | | | | | | Length | 94 mm | | | 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 | | Fixed aperture | No | | | Aperture | f/3.5 | | | | | | | Zoom range | 3.1x | | | Weight | 230 g | | | | | | | Max focal length | 55 mm | | | Diameter | 69 mm | | | | | | | Length | 69 mm | | | Min focal length | 18 mm | | | | | | | | |
