Wide aperture
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Camera
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Pentax K20D
Lens category
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Type
Pentax K20D

Pentax K20D 50mm Lenses that have a f/1.8 or faster aperture

#1

Sigma 50mm f/1.4 EX DG HSM Pentax-k

Sigma 50mm f/1.4 EX DG HSM Pentax-k

$499

"First off it's a solid lens, a bit heavy but it takes a beating. Fast focus and quiet. I use it with k20 and I am very happy with the results. A must for low light photography."

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Silent focus motor
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Silent and fast
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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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Weight 0.5 kg
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Auto focus Yes
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Diameter 85 mm
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Focus motor Sigma HSM
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Zoom range 1x
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Length 68 mm
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Fisheye No
#2

Pentax SMC FA 50mm f/1.4

Pentax SMC  FA 50mm f/1.4

$447

"The pictures are very sharp. Low light is fantastic. I have not found anything I dislike about it."

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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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Weight 222 g
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Auto focus Yes
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Diameter 64 mm
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Focus motor None
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Zoom range 1x
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Length 38 mm
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Fisheye No
#3

Zeiss 50mm f/1.4 ZK Pentax-k

Zeiss 50mm f/1.4 ZK Pentax-k

"It will be a 75mm in APS-C format, and great for portrait. The color rendition is much richer than my 43mm limited."

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Aperture f/1.4
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Weight n/a
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Auto focus No
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Diameter n/a
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Focus motor None
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Zoom range 1x
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Length n/a
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Fisheye No