Lens category
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Lens mount
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Type

Pentax K Prime Lenses

#1

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

Pentax SMC FA 31mm f/1.8

Pentax SMC  FA 31mm f/1.8

"The autofocus is fast and accurate and its size and weight balances out the K7 with or without the battery grip." bhphotovideo.com

 
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Wide aperture
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f/1.8
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Min focal length 31 mm
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Diameter 66 mm
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Aperture f/1.8
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Weight 346 g
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Max focal length 31 mm
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Auto focus Yes
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Length 69 mm
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Zoom range 1x
#3

Pentax SMC FA 77mm f/1.8

Pentax SMC  FA 77mm f/1.8

"Great multi-purpose performing lens, particularly if you want to travel light and leave the bag at home." bhphotovideo.com

 
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Wide aperture
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f/1.8
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Min focal length 77 mm
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Diameter 74 mm
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Aperture f/1.8
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Weight 269 g
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Max focal length 77 mm
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Auto focus Yes
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Length 48 mm
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Zoom range 1x
#4

Pentax SMC 35mm DA L f/2.4 AL

Pentax SMC 35mm DA L f/2.4 AL
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Min focal length 35 mm
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Diameter 64 mm
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Aperture f/2.4
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Weight 125 g
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Max focal length 35 mm
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Auto focus Yes
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Length 46 mm
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Zoom range 1x
#5

Pentax SMC DA 50mm f/1.8

Pentax SMC  DA 50mm f/1.8
 
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Wide aperture
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f/1.8
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Min focal length 50 mm
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Diameter 64 mm
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Aperture f/1.8
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Weight 122 g
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Max focal length 50 mm
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Auto focus Yes
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Length 38 mm
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Zoom range 1x
#6

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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Min focal length 55 mm
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Diameter 71 mm
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Aperture f/1.4
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Weight 375 g
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Max focal length 55 mm
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Auto focus Yes
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Length 66 mm
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Zoom range 1x
#7

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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Min focal length 100 mm
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Diameter 81 mm
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Aperture f/2.8
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Weight 340 g
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Max focal length 100 mm
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Auto focus Yes
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Length 64 mm
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Zoom range 1x
#8

Pentax SMC DA* 300mm f/4 ED SDM

Pentax SMC  DA* 300mm f/4 ED SDM

"Incredible! From the very first moment you look through the view-finder, you'll see the difference. It puts other lenses to shame, especially zooms. Razor sharp!" bhphotovideo.com

 
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Great telephoto lens
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300 mm
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Min focal length 300 mm
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Diameter 84 mm
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Aperture f/4
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Weight 1.1 kg
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Max focal length 300 mm
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Auto focus Yes
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Length 183 mm
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Zoom range 1x
#9

Pentax SMC DA 14mm f/2.8

Pentax SMC  DA 14mm f/2.8

"ALL IN ALL THIS LENSE DELIVERS BEAUTIFUL EXPOSURES IF YOU KNOW HOW TO USE YOUR CAMARA!!!" bhphotovideo.com

 
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Wide angle lens
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14 mm
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Min focal length 14 mm
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Diameter 84 mm
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Aperture f/2.8
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Weight 420 g
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Max focal length 14 mm
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Auto focus Yes
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Length 69 mm
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Zoom range 1x
#10

Pentax SMC HD DA 70mm f/2.4

Pentax SMC HD DA 70mm f/2.4
 
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Quite short
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25 mm
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Min focal length 70 mm
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Diameter 64 mm
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Aperture f/2.4
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Weight 130 g
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Max focal length 70 mm
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Auto focus Yes
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Length 25 mm
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Zoom range 1x