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A wide angle view of a city scape

Pentax K Wide angle lenses that have a f/2 or faster aperture

#1

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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Diameter 83 mm
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Auto focus No
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Weight 0.6 kg
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Length 88 mm
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Max focal length 16 mm
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Zoom range 1x
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Min focal length 16 mm
#2

Sigma 18-35mm f/1.8 DC HSM Art Pentax-k

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Supports autofocus
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Easier to use
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Aperture f/1.8
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Diameter n/a
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Auto focus Yes
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Weight 0.8 kg
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Length n/a
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Max focal length 35 mm
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Zoom range 1.9x
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Min focal length 18 mm
#3

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

Sigma 18-35mm f/1.8 DC HSM Pentax K
 
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Supports autofocus
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Easier to use
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Aperture f/1.8
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Diameter 78 mm
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Auto focus Yes
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Weight 0.8 kg
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Length 121 mm
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Max focal length 35 mm
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Zoom range 1.9x
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Min focal length 18 mm
#4

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

Samyang 16mm f/2 ED AS UMC CS Pentax K
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Aperture f/2
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Diameter 86 mm
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Auto focus No
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Weight 0.6 kg
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Length 88 mm
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Max focal length 16 mm
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Zoom range 1x
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Min focal length 16 mm