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Focus motor
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Pentax K Lenses that have a Sigma HSM focus motor

#1

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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Focus motor Sigma HSM
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Aperture f/3.5
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Zoom range 16.7x
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Fixed aperture No
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Max focal length 300 mm
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Length 102 mm
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Fisheye No
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Image stabilization None
#2

Sigma 18-250mm f/3.5-6.3 DC Macro HSM Pentax K

Sigma 18-250mm f/3.5-6.3 DC Macro HSM Pentax K
 
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Great zoom range
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13.9x
 
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Great telephoto lens
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250 mm
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Focus motor Sigma HSM
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Aperture f/3.5
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Zoom range 13.9x
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Fixed aperture No
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Max focal length 250 mm
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Length 89 mm
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Fisheye No
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Image stabilization None
#3

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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Great zoom range
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10x
 
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More advanced image stabilization
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Sigma OS
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Focus motor Sigma HSM
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Aperture f/4.5
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Zoom range 10x
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Fixed aperture No
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Max focal length 500 mm
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Length 218 mm
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Fisheye No
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Image stabilization Sigma OS
#4

Sigma 18-200mm f/3.5-6.3 DC Macro HSM Pentax K

Sigma 18-200mm f/3.5-6.3 DC Macro HSM Pentax K
 
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Great zoom range
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11.1x
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Focus motor Sigma HSM
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Aperture f/3.5
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Zoom range 11.1x
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Fixed aperture No
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Max focal length 200 mm
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Length 86 mm
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Fisheye No
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Image stabilization None
#5

Sigma 150-500mm f/5-6.3 DG OS HSM APO Pentax K

Sigma 150-500mm f/5-6.3 DG OS HSM APO 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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Focus motor Sigma HSM
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Aperture f/5
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Zoom range 3.3x
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Fixed aperture No
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Max focal length 500 mm
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Length 252 mm
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Fisheye No
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Image stabilization Sigma OS
#6

Sigma 50mm f/1.4 EX DG HSM Pentax K

Sigma 50mm f/1.4 EX DG HSM Pentax K

"I have been very satisfied: this lens is absolutely great for low light, or portraiture, requiring large apertures. I shoot with a Pentax k-x, non full-frame, and so the focal length is closer to 85 mm, perfect for portraits." bhphotovideo.com

 
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Wide aperture
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f/1.4
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Focus motor Sigma HSM
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Aperture f/1.4
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Zoom range 1x
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Fixed aperture n/a
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Max focal length 50 mm
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Length 69 mm
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Fisheye No
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Image stabilization None
#7

Sigma 30mm f/1.4 DC HSM Art Pentax-k

Placeholder
 
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Wide aperture
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f/1.4
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Focus motor Sigma HSM
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Aperture f/1.4
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Zoom range 1x
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Fixed aperture n/a
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Max focal length 30 mm
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Length n/a
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Fisheye No
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Image stabilization None
#8

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

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

"This lens is absolutely great for scenery and landscape. I did a lot of research for a good wide-angle lens and for the price this lens was definitely my favorite." 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 Sigma HSM
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Aperture f/3.5
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Zoom range 2x
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Fixed aperture Yes
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Max focal length 20 mm
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Length 89 mm
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Fisheye No
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Image stabilization None
#9

Sigma 18-35mm f/1.8 DC HSM Pentax K

Sigma 18-35mm f/1.8 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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Wide aperture
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f/1.8
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Focus motor Sigma HSM
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Aperture f/1.8
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Zoom range 1.9x
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Fixed aperture Yes
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Max focal length 35 mm
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Length 121 mm
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Fisheye No
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Image stabilization None
#10

Sigma 10mm f/2.8 EX DC HSM Pentax K

Sigma 10mm f/2.8 EX DC HSM Pentax K
 
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Fisheye
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Extremely wide circular images
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Focus motor Sigma HSM
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Aperture f/2.8
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Zoom range 1x
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Fixed aperture n/a
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Max focal length 10 mm
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Length 84 mm
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Fisheye Yes
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Image stabilization None