Wide aperture
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Lens category
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Lens mount
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Pentax K Lenses that have a f/1.4 or faster aperture

#1

Pentax SMC FA 50mm f/1.4

Pentax SMC  FA 50mm f/1.4

"I love love love this new lens, the quality of the photos is spectacular if done in the right lighting. I would absolutely recommend for novices and professionals alike." bhphotovideo.com

 
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Supports autofocus
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Easier to use
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Aperture f/1.4
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Min focal length 50 mm
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Auto focus Yes
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Weight 221 g
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Diameter 64 mm
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Max focal length 50 mm
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Length 38 mm
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Zoom range 1x
#2

Pentax SMC 55mm f/1.4 DA* SDM

Pentax SMC 55mm f/1.4 DA* SDM

"I love the lens in almost all ways. It's sharp, fast focusing, needs very little light in F1.4 and the quick shift to manual focus is really OK to have." bhphotovideo.com

 
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Supports autofocus
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Easier to use
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Aperture f/1.4
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Min focal length 55 mm
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Auto focus Yes
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Weight 375 g
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Diameter 71 mm
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Max focal length 55 mm
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Length 66 mm
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Zoom range 1x
#3

Samyang 24mm f/1.4 ED AS UMC Pentax K

Samyang 24mm f/1.4 ED AS UMC Pentax K
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Aperture f/1.4
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Min focal length 24 mm
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Auto focus No
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Weight n/a
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Diameter 83 mm
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Max focal length 24 mm
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Length 95 mm
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Zoom range 1x
#4

Samyang 35mm f/1.4 AS UMC Pentax K

Samyang 35mm f/1.4 AS UMC Pentax K
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Aperture f/1.4
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Min focal length 35 mm
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Auto focus No
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Weight 0.7 kg
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Diameter 83 mm
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Max focal length 35 mm
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Length 110 mm
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Zoom range 1x
#5

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

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Supports autofocus
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Easier to use
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Aperture f/1.4
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Min focal length 30 mm
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Auto focus Yes
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Weight 435 g
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Diameter n/a
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Max focal length 30 mm
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Length n/a
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Zoom range 1x
#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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Supports autofocus
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Easier to use
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Aperture f/1.4
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Min focal length 50 mm
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Auto focus Yes
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Weight 0.5 kg
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Diameter 84 mm
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Max focal length 50 mm
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Length 69 mm
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Zoom range 1x
#7

Rokinon 24mm f/1.4 ED AS UMC Pentax K

Rokinon 24mm f/1.4 ED AS UMC Pentax K
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Aperture f/1.4
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Min focal length 24 mm
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Auto focus No
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Weight n/a
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Diameter 83 mm
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Max focal length 24 mm
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Length 96 mm
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Zoom range 1x
#8

Rokinon 35mm f/1.4 AS UMC Pentax K

Rokinon 35mm f/1.4 AS UMC Pentax K
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Aperture f/1.4
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Min focal length 35 mm
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Auto focus No
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Weight 0.7 kg
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Diameter 83 mm
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Max focal length 35 mm
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Length 110 mm
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Zoom range 1x
#9

Rokinon 50mm f/1.4 AS IF UMC Pentax-k

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Aperture f/1.4
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Min focal length 50 mm
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Auto focus No
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Weight 0.5 kg
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Diameter n/a
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Max focal length 50 mm
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Length n/a
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Zoom range 1x
#10

Rokinon 85mm f/1.4 Pentax K

Rokinon 85mm f/1.4 Pentax K
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Aperture f/1.4
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Min focal length 85 mm
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Auto focus No
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Weight 0.6 kg
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Diameter 70 mm
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Max focal length 85 mm
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Length 83 mm
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Zoom range 1x