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Lens category
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Pentax Lenses that have a f/2.8 or faster aperture

#1

Pentax SMC FA 77mm f/1.8

Pentax SMC  FA 77mm f/1.8

"Its color rendition is simply unbelievable. It exceeds even the abilities of my 43 mm Limited for sunsets and sunrises when coupled with the CTE White Balance settings and custom Hi/Lo Key Adjust features on my K-7." bhphotovideo.com

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Aperture f/1.8
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Min focal length 77 mm
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Fixed aperture n/a
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Zoom range 1x
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Diameter 74 mm
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Max focal length 77 mm
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Length 48 mm
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Weight 269 g
#2

Pentax SMC FA 43mm f/1.9

Pentax SMC  FA 43mm f/1.9

"So far the results have been great. Nice and sharp. Great bokeh. Excellent lighted build quality." bhphotovideo.com

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Aperture f/1.9
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Min focal length 43 mm
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Fixed aperture n/a
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Zoom range 1x
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Diameter 64 mm
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Max focal length 43 mm
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Length 28 mm
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Weight 156 g
#3

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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Wide aperture
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f/1.4
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Aperture f/1.4
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Min focal length 55 mm
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Fixed aperture n/a
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Zoom range 1x
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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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Weight 375 g
#4

Pentax SMC DA FA 100mm f/2.8 WR Macro

Pentax SMC  DA FA 100mm f/2.8 WR Macro

"It is light weight, very smooth, very sharp images" bhphotovideo.com

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Aperture f/2.8
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Min focal length 100 mm
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Fixed aperture n/a
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Zoom range 1x
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Diameter 81 mm
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Max focal length 100 mm
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Length 64 mm
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Weight 340 g
#5

Pentax SMC DA 50mm f/1.8

Pentax SMC  DA 50mm f/1.8
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Aperture f/1.8
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Min focal length 50 mm
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Fixed aperture n/a
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Zoom range 1x
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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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Weight 122 g
#6

Pentax SMC HD DA 20-40mm f/2.8-4 ED DC WR

Pentax SMC HD DA 20-40mm f/2.8-4 ED DC WR
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Aperture f/2.8
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Min focal length 20 mm
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Fixed aperture No
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Zoom range 2x
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Diameter 71 mm
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Max focal length 40 mm
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Length 69 mm
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Weight 283 g
#7

Pentax SMC HD DA 35mm f/2.8 Macro

Pentax SMC HD DA 35mm f/2.8 Macro
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Aperture f/2.8
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Min focal length 35 mm
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Fixed aperture n/a
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Zoom range 1x
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Diameter 64 mm
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Max focal length 35 mm
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Length 46 mm
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Weight 213 g
#8

Pentax SMC D FA 50mm f/2.8 Macro

Pentax SMC  D FA 50mm f/2.8 Macro

"As expected this is a fast, versatile lens for taking macro photographs." bhphotovideo.com

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Aperture f/2.8
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Min focal length 50 mm
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Fixed aperture n/a
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Zoom range 1x
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Diameter 66 mm
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Max focal length 50 mm
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Length 66 mm
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Weight 264 g
#9

Pentax SMC DA* 16-50mm f/2.8 ED SDM

Pentax SMC  DA* 16-50mm f/2.8 ED SDM

"Great lens for everyday use... Fast and sharp.... The price was nice also" bhphotovideo.com

 
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Fixed aperture
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The same maximum aperture at all focal lengths
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Aperture f/2.8
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Min focal length 16 mm
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Fixed aperture Yes
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Zoom range 3.1x
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Diameter 84 mm
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Max focal length 50 mm
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Length 99 mm
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Weight 0.6 kg
#10

Pentax SMC FA 50mm f/1.4

Pentax SMC  FA 50mm f/1.4

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

 
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Wide aperture
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f/1.4
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Aperture f/1.4
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Min focal length 50 mm
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Fixed aperture n/a
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Zoom range 1x
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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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Weight 221 g