Wide angle focal length
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Lens category
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Lens mount
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Pentax K Lenses that are 10mm or wider

#1

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

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"I am very pleased with this lens so far. It is built well and shots are very clear. " bhphotovideo.com

 
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Fisheye
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Extremely wide circular images
 
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Supports autofocus
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Easier to use
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Min focal length 10 mm
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Aperture f/3.5
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Fisheye Yes
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Diameter 69 mm
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Fixed aperture No
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Zoom range 1.7x
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Auto focus Yes
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Length 71 mm
#2

Rokinon 10mm f/2.8 ED AS NCS CS Pentax K

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Min focal length 10 mm
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Aperture f/2.8
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Fisheye No
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Diameter 86 mm
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Fixed aperture n/a
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Zoom range 1x
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Auto focus No
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Length 78 mm
#3

Rokinon 8mm f/3.5 Pentax K

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Fisheye
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Extremely wide circular images
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Min focal length 8 mm
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Aperture f/3.5
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Fisheye Yes
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Diameter 75 mm
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Fixed aperture n/a
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Zoom range 1x
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Auto focus No
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Length 76 mm
#4

Rokinon 8mm f/3.5 HD Pentax K

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Fisheye
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Extremely wide circular images
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Min focal length 8 mm
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Aperture f/3.5
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Fisheye Yes
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Diameter 75 mm
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Fixed aperture n/a
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Zoom range 1x
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Auto focus No
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Length 77 mm
#5

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

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"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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Supports autofocus
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Easier to use
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Min focal length 10 mm
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Aperture f/3.5
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Fisheye No
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Diameter 86 mm
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Fixed aperture Yes
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Zoom range 2x
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Auto focus Yes
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Length 89 mm
#6

Samyang 10mm f/2.8 ED AS NCS CS Pentax K

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Min focal length 10 mm
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Aperture f/2.8
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Fisheye No
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Diameter 86 mm
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Fixed aperture n/a
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Zoom range 1x
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Auto focus No
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Length 105 mm
#7

Sigma 10-20mm f/4-5.6 EX DC J Pentax K

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Supports autofocus
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Easier to use
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Min focal length 10 mm
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Aperture f/4
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Fisheye No
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Diameter 86 mm
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Fixed aperture No
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Zoom range 2x
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Auto focus Yes
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Length 89 mm
#8

Lensbaby 5.8mm f/3.5 Circular Fisheye Pentax K

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Fisheye
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Extremely wide circular images
 
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Supports autofocus
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Easier to use
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Min focal length 5.8 mm
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Aperture f/3.5
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Fisheye Yes
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Diameter n/a
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Fixed aperture n/a
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Zoom range 1x
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Auto focus Yes
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Length n/a
#9

Samyang 8mm f/3.5 Pentax K

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Fisheye
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Extremely wide circular images
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Min focal length 8 mm
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Aperture f/3.5
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Fisheye Yes
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Diameter 75 mm
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Fixed aperture n/a
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Zoom range 1x
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Auto focus No
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Length 76 mm
#10

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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Supports autofocus
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Easier to use
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Min focal length 10 mm
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Aperture f/2.8
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Fisheye Yes
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Diameter 76 mm
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Fixed aperture n/a
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Zoom range 1x
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Auto focus Yes
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Length 84 mm