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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 $600 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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Great telephoto lens
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270 mm
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Focus motor Pentax SDM
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Max focal length 270 mm
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Zoom range 15x
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Min focal length 18 mm
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Fixed aperture No
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Length 89 mm
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Aperture f/3.5
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Diameter 76 mm
#2

Pentax SMC 55mm f/1.4 DA* SDM

Pentax SMC 55mm f/1.4 DA* SDM

"I love the lens in almost all ways. It's sharp, fast focusing, needs very little light in F1.4 and the quick shift to manual focus is really OK to have." bhphotovideo.com

 
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Wide aperture
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f/1.4
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Focus motor Pentax SDM
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Max focal length 55 mm
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Zoom range 1x
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Min focal length 55 mm
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Fixed aperture n/a
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Length 66 mm
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Aperture f/1.4
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Diameter 71 mm
#3

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

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

"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

 
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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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Max focal length 70 mm
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Zoom range 4.1x
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Min focal length 17 mm
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Fixed aperture Yes
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Length 94 mm
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Aperture f/4
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Diameter 76 mm