Lens category
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Lens mount
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Type

Pentax K Prime Lenses

#1

Pentax SMC HD DA 21mm f/3.2 AL

Pentax SMC HD DA 21mm f/3.2 AL
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Min focal length 21 mm
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Diameter 64 mm
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Aperture f/3.2
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Weight 119 g
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Length 25 mm
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Auto focus Yes
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Max focal length 21 mm
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Zoom range 1x
#2

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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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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Length 48 mm
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Auto focus Yes
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Max focal length 77 mm
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Zoom range 1x
#3

Pentax SMC DA* 300mm f/4 ED SDM

Pentax SMC  DA* 300mm f/4 ED SDM

"Stellar performer. Very sharp, and works well with in-body stabilisation, which is more noticable/effective at this focal length. Suprisingly good bokeh! This has now become my default lens bushwalking, with a shorter macro and wide prime in the bag. Very versatile thanks to close minimum focus distance. Not as big as imagined. About as heavy as expected (not light, but probably good for this class of lens). Overall GREAT and well worth the investment." 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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Length 183 mm
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Auto focus Yes
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Max focal length 300 mm
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Zoom range 1x
#4

Pentax SMC DA 40mm f/2.8

Pentax SMC  DA 40mm f/2.8

"This lens is light weight and very compact. It is fast enough for low light applications and is built like a tank." bhphotovideo.com

 
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Quite short
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15 mm
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Min focal length 40 mm
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Diameter 64 mm
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Aperture f/2.8
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Weight 91 g
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Length 15 mm
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Auto focus Yes
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Max focal length 40 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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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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Length 38 mm
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Auto focus Yes
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Max focal length 50 mm
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Zoom range 1x
#6

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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Length 38 mm
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Auto focus Yes
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Max focal length 50 mm
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Zoom range 1x
#7

Pentax SMC FA 31mm f/1.8

Pentax SMC  FA 31mm f/1.8

"A thing of beauty that takes stunning photos." bhphotovideo.com

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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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Length 69 mm
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Auto focus Yes
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Max focal length 31 mm
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Zoom range 1x
#8

Pentax SMC FA 43mm f/1.9

Pentax SMC  FA 43mm f/1.9

"The build quality alone is just so superior; this little beauty is just a joy to handle." bhphotovideo.com

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Min focal length 43 mm
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Diameter 64 mm
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Aperture f/1.9
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Weight 156 g
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Length 28 mm
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Auto focus Yes
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Max focal length 43 mm
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Zoom range 1x
#9

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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Length 46 mm
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Auto focus Yes
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Max focal length 35 mm
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Zoom range 1x
#10

Pentax SMC 35mm f/2 FA AL

Pentax SMC 35mm f/2 FA AL
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Min focal length 35 mm
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Diameter 64 mm
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Aperture f/2
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Weight 200 g
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Length 46 mm
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Auto focus Yes
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Max focal length 35 mm
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Zoom range 1x