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Pentax K-5
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Focus motor
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Pentax K-5

Pentax K-5 Lenses for less than $400 that have a generic focus motor, are 24mm or wider and have a f/2.8 or faster aperture

#1

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

Rokinon 10mm f/2.8 ED AS NCS CS Pentax K
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Aperture f/2.8
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Auto focus No
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Min focal length 10 mm
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Zoom range 1x
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Focus motor Generic motor
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Diameter 86 mm
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Fisheye No
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Length 78 mm
#2

Rokinon 12mm f/2.8 ED AS IF NCS UMC Pentax K

Rokinon 12mm f/2.8 ED AS IF NCS UMC Pentax K
 
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Fisheye
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Extremely wide circular images
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Aperture f/2.8
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Auto focus No
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Min focal length 12 mm
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Zoom range 1x
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Focus motor Generic motor
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Diameter 77 mm
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Fisheye Yes
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Length 71 mm
#3

Rokinon 14mm f/2.8 IF ED UMC Pentax K

Rokinon 14mm f/2.8 IF ED UMC Pentax K
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Aperture f/2.8
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Auto focus No
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Min focal length 14 mm
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Zoom range 1x
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Focus motor Generic motor
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Diameter 87 mm
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Fisheye No
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Length 95 mm
#4

Rokinon 16mm f/2 ED AS UMC CS Pentax K

Rokinon 16mm f/2 ED AS UMC CS Pentax K
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Aperture f/2
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Auto focus No
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Min focal length 16 mm
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Zoom range 1x
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Focus motor Generic motor
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Diameter 83 mm
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Fisheye No
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Length 88 mm
#5

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

Samyang 10mm f/2.8 ED AS NCS CS Pentax K
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Aperture f/2.8
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Auto focus No
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Min focal length 10 mm
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Zoom range 1x
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Focus motor Generic motor
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Diameter 86 mm
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Fisheye No
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Length 105 mm
#6

Samyang 14mm f/2.8 IF ED UMC Pentax K

Samyang 14mm f/2.8 IF ED UMC Pentax K
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Aperture f/2.8
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Auto focus No
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Min focal length 14 mm
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Zoom range 1x
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Focus motor Generic motor
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Diameter 87 mm
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Fisheye No
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Length 95 mm
#7

Tamron 17-50mm f/2.8 XR Di-II LD [IF] Pentax K

Tamron 17-50mm f/2.8 XR Di-II LD [IF] Pentax K

"The quality of the lens feels great and you come away feeling like you're getting a lot for your money. The ability to lock it into 17mm is handy for transportation and twisting it onto your body. The AF is audible but not loud enough to make it seem cheap." bhphotovideo.com

 
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Supports autofocus
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Easier to use
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Aperture f/2.8
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Auto focus Yes
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Min focal length 17 mm
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Zoom range 2.9x
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Focus motor Generic motor
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Diameter 74 mm
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Fisheye No
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Length 81 mm