Lens category
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Lens mount
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Type

Pentax K Zoom Lenses

#1

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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Max focal length 300 mm
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Weight 466 g
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Fixed aperture No
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Image stabilization None
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Zoom range 5.5x
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Diameter 71 mm
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Length 112 mm
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Aperture f/4
#2

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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Max focal length 40 mm
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Weight 283 g
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Fixed aperture No
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Image stabilization None
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Zoom range 2x
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Diameter 71 mm
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Length 69 mm
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Aperture f/2.8
#3

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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Max focal length 135 mm
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Weight 405 g
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Fixed aperture No
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Image stabilization None
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Zoom range 7.5x
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Diameter 74 mm
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Length 76 mm
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Aperture f/3.5
#4

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

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

"For landscape photos during the winter months and in wet or dusty conditions, it is a great lens." bhphotovideo.com

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Max focal length 55 mm
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Weight 230 g
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Fixed aperture No
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Image stabilization None
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Zoom range 3.1x
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Diameter 69 mm
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Length 69 mm
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Aperture f/3.5
#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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Max focal length 24 mm
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Weight 431 g
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Fixed aperture Yes
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Image stabilization None
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Zoom range 2x
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Diameter 84 mm
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Length 86 mm
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Aperture f/4
#6

Sigma 50-500mm f/4.5-6.3 APO DG OS HSM Pentax K

Sigma 50-500mm f/4.5-6.3 APO DG OS HSM Pentax K
 
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Great telephoto lens
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500 mm
 
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More advanced image stabilization
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Sigma OS
 
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Great zoom range
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10x
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Max focal length 500 mm
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Weight 2 kg
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Fixed aperture No
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Image stabilization Sigma OS
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Zoom range 10x
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Diameter 104 mm
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Length 218 mm
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Aperture f/4.5
#7

Pentax SMC 60-250mm f/4 ED DA* SDM

Pentax SMC 60-250mm f/4 ED DA* SDM

"I've used this lens now for about 1200 shots of lacrosse games taken in the evening/night under the lights, bright sun and cloudy days. Great resolution when the focus is spot on." bhphotovideo.com

 
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Fixed aperture
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The same maximum aperture at all focal lengths
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Max focal length 250 mm
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Weight 1 kg
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Fixed aperture Yes
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Image stabilization None
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Zoom range 4.2x
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Diameter 81 mm
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Length 168 mm
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Aperture f/4
#8

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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Max focal length 450 mm
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Weight 2 kg
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Fixed aperture No
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Image stabilization None
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Zoom range 3x
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Diameter 95 mm
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Length 242 mm
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Aperture f/4.5
#9

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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Max focal length 85 mm
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Weight 488 g
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Fixed aperture No
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Image stabilization None
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Zoom range 5.3x
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Diameter 78 mm
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Length 94 mm
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Aperture f/3.5
#10

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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Max focal length 70 mm
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Weight 485 g
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Fixed aperture Yes
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Image stabilization None
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Zoom range 4.1x
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Diameter 76 mm
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Length 94 mm
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Aperture f/4