Lens category
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Lens mount
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Type

Pentax K Zoom Lenses

#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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Great zoom range
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7.5x
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Fisheye No
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Length 76 mm
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Fixed aperture No
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Aperture f/3.5
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Max focal length 135 mm
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Weight 405 g
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Zoom range 7.5x
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Min focal length 18 mm
#2

Pentax SMC HD D FA 150-450mm f/4.5-5.6 DC AW

Pentax SMC HD D FA 150-450mm f/4.5-5.6 DC AW
 
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Great telephoto lens
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450 mm
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Fisheye No
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Length 242 mm
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Fixed aperture No
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Aperture f/4.5
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Max focal length 450 mm
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Weight 2 kg
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Zoom range 3x
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Min focal length 150 mm
#3

Pentax SMC HD DA 20-40mm f/2.8-4 ED DC WR

Pentax SMC HD DA 20-40mm f/2.8-4 ED DC WR
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Fisheye No
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Length 69 mm
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Fixed aperture No
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Aperture f/2.8
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Max focal length 40 mm
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Weight 283 g
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Zoom range 2x
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Min focal length 20 mm
#4

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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Fisheye No
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Length 94 mm
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Fixed aperture No
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Aperture f/3.5
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Max focal length 85 mm
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Weight 488 g
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Zoom range 5.3x
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Min focal length 16 mm
#5

Pentax SMC DA 12-24mm f/4 ED AL

Pentax SMC  DA 12-24mm f/4 ED AL

"After 1 year use, this lens is must-take for me now." bhphotovideo.com

 
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Fixed aperture
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The same maximum aperture at all focal lengths
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Fisheye No
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Length 86 mm
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Fixed aperture Yes
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Aperture f/4
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Max focal length 24 mm
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Weight 431 g
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Zoom range 2x
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Min focal length 12 mm
#6

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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Fisheye No
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Length 94 mm
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Fixed aperture Yes
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Aperture f/4
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Max focal length 70 mm
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Weight 485 g
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Zoom range 4.1x
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Min focal length 17 mm
#7

Pentax SMC DA* 50-135mm f/2.8 ED SDM

Pentax SMC  DA* 50-135mm f/2.8 ED SDM

"The build quality seems top notch, no play in the focus or zoom rings at all, and very smooth action of both." bhphotovideo.com

 
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Fixed aperture
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The same maximum aperture at all focal lengths
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Fisheye No
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Length 137 mm
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Fixed aperture Yes
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Aperture f/2.8
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Max focal length 135 mm
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Weight 0.7 kg
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Zoom range 2.7x
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Min focal length 50 mm
#8

Pentax SMC HD Pentax-DA 55-300mm f/4-5.8 ED WR

Pentax SMC HD Pentax-DA 55-300mm f/4-5.8 ED WR
 
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Great telephoto lens
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300 mm
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Fisheye No
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Length 112 mm
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Fixed aperture No
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Aperture f/4
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Max focal length 300 mm
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Weight 466 g
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Zoom range 5.5x
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Min focal length 55 mm
#9

Sigma 17-70mm f/2.8-4 DC Macro HSM Pentax K

Sigma 17-70mm f/2.8-4 DC Macro HSM Pentax K
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Fisheye No
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Length 82 mm
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Fixed aperture No
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Aperture f/2.8
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Max focal length 70 mm
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Weight 465 g
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Zoom range 4.1x
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Min focal length 17 mm
#10

Pentax SMC DA 10-17mm f/3.5-4.5 ED

Pentax SMC  DA 10-17mm f/3.5-4.5 ED

"I just love this lense! Sharp, exact focus on the k10 and superbly build. " bhphotovideo.com

 
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Fisheye
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Extremely wide circular images
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Fisheye Yes
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Length 71 mm
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Fixed aperture No
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Aperture f/3.5
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Max focal length 17 mm
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Weight 320 g
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Zoom range 1.7x
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Min focal length 10 mm