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Camera
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Pentax K-7
Lens category
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Focus motor
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Pentax K-7

Pentax K-7 Lenses made by Pentax for less than $500 that have a Pentax SDM focus motor

#1

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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Focus motor Pentax SDM
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Aperture f/3.5
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Zoom range 15x
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Length 89 mm
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Fixed aperture No
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Weight 453 g
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Max focal length 270 mm
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Min focal length 18 mm
#2

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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Focus motor Pentax SDM
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Aperture f/4
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Zoom range 4.1x
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Length 94 mm
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Fixed aperture Yes
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Weight 485 g
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Max focal length 70 mm
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Min focal length 17 mm