Wide angle focal length
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Type
Blue mountain view

Pentax K Zoom Landscape lenses for less than $500 that are 18mm or wider

#1

Pentax SMC DA 18-135mm f/3.5-5.6 ED AL DC WR

Pentax SMC  DA 18-135mm f/3.5-5.6 ED AL DC WR
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Min focal length 18 mm
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Aperture f/3.5
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Zoom range 7.5x
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Diameter 74 mm
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Fixed aperture No
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Length 76 mm
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Max focal length 135 mm
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Weight 405 g
#2

Pentax SMC DAA 18-270mm f/3.5-6.3 ED SDM

Pentax SMC  DAA 18-270mm f/3.5-6.3 ED SDM
 
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Great zoom range
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15x
 
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Great telephoto lens
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270 mm
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Min focal length 18 mm
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Aperture f/3.5
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Zoom range 15x
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Diameter 76 mm
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Fixed aperture No
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Length 89 mm
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Max focal length 270 mm
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Weight 453 g
#3

Pentax SMC HD DA 16-85mm f/3.5-5.6 ED DC WR

Pentax SMC HD DA 16-85mm f/3.5-5.6 ED DC WR
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Min focal length 16 mm
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Aperture f/3.5
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Zoom range 5.3x
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Diameter 78 mm
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Fixed aperture No
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Length 94 mm
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Max focal length 85 mm
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Weight 488 g
#4

Pentax SMC HD DA 18-50mm f/4-5.6 DC WR RE

Pentax SMC HD DA 18-50mm f/4-5.6 DC WR RE
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Min focal length 18 mm
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Aperture f/4
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Zoom range 2.8x
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Diameter 71 mm
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Fixed aperture No
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Length 41 mm
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Max focal length 50 mm
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Weight 158 g
#5

Pentax SMC DA 17-70mm f/4 AL SDM

Pentax SMC  DA 17-70mm f/4 AL SDM

"Great lens. Renders sharp images with wonderful colors" bhphotovideo.com

 
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Fixed aperture
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The same maximum aperture at all focal lengths
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Min focal length 17 mm
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Aperture f/4
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Zoom range 4.1x
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Diameter 76 mm
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Fixed aperture Yes
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Length 94 mm
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Max focal length 70 mm
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Weight 485 g
#6

Pentax SMC DA 18-55mm f/3.5-5.6 AL WR

Pentax SMC DA 18-55mm f/3.5-5.6 AL WR

"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

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Min focal length 18 mm
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Aperture f/3.5
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Zoom range 3.1x
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Diameter 69 mm
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Fixed aperture No
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Length 69 mm
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Max focal length 55 mm
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Weight 230 g
#7

Sigma 10-20mm f/3.5 EX DC HSM Pentax K

Sigma 10-20mm f/3.5 EX DC HSM Pentax K
 
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Fixed aperture
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The same maximum aperture at all focal lengths
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Min focal length 10 mm
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Aperture f/3.5
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Zoom range 2x
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Diameter 86 mm
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Fixed aperture Yes
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Length 89 mm
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Max focal length 20 mm
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Weight 0.5 kg
#8

Sigma 17-50mm f/2.8 EX DC HSM Pentax K

Sigma 17-50mm f/2.8 EX DC HSM Pentax K
 
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Fixed aperture
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The same maximum aperture at all focal lengths
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Min focal length 17 mm
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Aperture f/2.8
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Zoom range 2.9x
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Diameter 84 mm
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Fixed aperture Yes
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Length 91 mm
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Max focal length 50 mm
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Weight 0.6 kg
#9

Sigma 18-300mm f/3.5-6.3 DC MACRO HSM Contemporary Pentax K

Sigma 18-300mm f/3.5-6.3 DC MACRO HSM Contemporary Pentax K
 
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Great zoom range
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16.7x
 
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Great telephoto lens
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300 mm
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Min focal length 18 mm
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Aperture f/3.5
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Zoom range 16.7x
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Diameter 79 mm
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Fixed aperture No
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Length 102 mm
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Max focal length 300 mm
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Weight 0.6 kg
#10

Tamron 17-50mm f/2.8 XR Di-II LD [IF] Pentax K

Tamron 17-50mm f/2.8 XR Di-II LD [IF] Pentax K

"It's razor sharp, even wide open. If that's all that matters to you in a lens, stop, do not pass Go! and buy this lens. Bokeh is pleasing for its price range as well." bhphotovideo.com

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