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Pentax K Lenses made by Rokinon for less than $300 that have a focus motor and have a f/4 or faster aperture

#1

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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Length 95 mm
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Focus motor Generic motor
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Weight 0.5 kg
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Fisheye No
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Min focal length 14 mm
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Diameter 87 mm
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Max focal length 14 mm
#2

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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Length 88 mm
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Focus motor Generic motor
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Weight 0.6 kg
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Fisheye No
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Min focal length 16 mm
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Diameter 83 mm
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Max focal length 16 mm
#3

Rokinon 8mm f/3.5 HD Pentax K

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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Aperture f/3.5
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Length 77 mm
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Focus motor Generic motor
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Weight 428 g
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Fisheye Yes
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Min focal length 8 mm
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Diameter 75 mm
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Max focal length 8 mm