Pentax K Zoom Landscape lenses for less than $400

"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			Diameter	76 mm
	Fixed aperture	Yes			Length	94 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			Diameter	69 mm
	Fixed aperture	No			Length	69 mm
	Max focal length	55 mm			Weight	230 g
	Aperture	f/3.5			Min focal length	18 mm

"This lens is absolutely great for scenery and landscape. I did a lot of research for a good wide-angle lens and for the price this lens was definitely my favorite." bhphotovideo.com

Fixed aperture The same maximum aperture at all focal lengths

	Zoom range	2x			Diameter	86 mm
	Fixed aperture	Yes			Length	89 mm
	Max focal length	20 mm			Weight	0.5 kg
	Aperture	f/3.5			Min focal length	10 mm

"The quality of the lens feels great and you come away feeling like you're getting a lot for your money. The ability to lock it into 17mm is handy for transportation and twisting it onto your body. The AF is audible but not loud enough to make it seem cheap." bhphotovideo.com

Fixed aperture The same maximum aperture at all focal lengths

	Zoom range	2.9x			Diameter	74 mm
	Fixed aperture	Yes			Length	81 mm
	Max focal length	50 mm			Weight	430 g
	Aperture	f/2.8			Min focal length	17 mm