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Focus motor
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Pentax K Lenses that have a generic focus motor

#1

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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Wide aperture
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f/1.9
 
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Quite short
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28 mm
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Focus motor Generic motor
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Length 28 mm
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Zoom range 1x
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Min focal length 43 mm
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Aperture f/1.9
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Diameter 64 mm
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Max focal length 43 mm
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Weight 156 g
#2

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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Wide aperture
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f/1.8
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Focus motor Generic motor
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Length 48 mm
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Zoom range 1x
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Min focal length 77 mm
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Aperture f/1.8
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Diameter 74 mm
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Max focal length 77 mm
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Weight 269 g
#3

Pentax SMC DA 18-135mm f/3.5-5.6 ED AL DC WR

Pentax SMC  DA 18-135mm f/3.5-5.6 ED AL DC WR
 
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Great zoom range
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7.5x
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Focus motor Generic motor
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Length 76 mm
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Zoom range 7.5x
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Min focal length 18 mm
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Aperture f/3.5
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Diameter 74 mm
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Max focal length 135 mm
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Weight 405 g
#4

Pentax SMC HD Pentax-DA 55-300mm f/4-5.8 ED WR

Pentax SMC HD Pentax-DA 55-300mm f/4-5.8 ED WR
 
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Great telephoto lens
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300 mm
 
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Great zoom range
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5.5x
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Focus motor Generic motor
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Length 112 mm
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Zoom range 5.5x
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Min focal length 55 mm
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Aperture f/4
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Diameter 71 mm
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Max focal length 300 mm
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Weight 466 g
#5

Pentax SMC DA 18-55mm f/3.5-5.6 AL WR

Pentax SMC DA 18-55mm f/3.5-5.6 AL WR

"This lens is workhorses, very nice contrast, fast autofocus, WR is very nice, just like water proof, I took alot pictures during raining, white water rafting, biking." bhphotovideo.com

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Focus motor Generic motor
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Length 69 mm
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Zoom range 3.1x
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Min focal length 18 mm
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Aperture f/3.5
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Diameter 69 mm
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Max focal length 55 mm
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Weight 230 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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Focus motor Generic motor
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Length 69 mm
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Zoom range 2x
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Min focal length 20 mm
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Aperture f/2.8
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Diameter 71 mm
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Max focal length 40 mm
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Weight 283 g
#7

Pentax SMC D FA 50mm f/2.8 Macro

Pentax SMC  D FA 50mm f/2.8 Macro

"Very sharp lens, excellent image quality, great colours in the images. A great 50 mm all-rounder." bhphotovideo.com

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Focus motor Generic motor
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Length 66 mm
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Zoom range 1x
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Min focal length 50 mm
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Aperture f/2.8
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Diameter 66 mm
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Max focal length 50 mm
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Weight 264 g
#8

Pentax SMC DA 50-200mm f/4-5.6 ED WR

Pentax SMC  DA 50-200mm f/4-5.6 ED WR

"Great lens, exactly as advertised. Easy to focus. Perfect for the camera body." bhphotovideo.com

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Focus motor Generic motor
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Length 79 mm
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Zoom range 4x
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Min focal length 50 mm
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Aperture f/4
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Diameter 69 mm
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Max focal length 200 mm
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Weight 286 g
#9

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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Wide aperture
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f/1.4
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Focus motor Generic motor
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Length 38 mm
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Zoom range 1x
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Min focal length 50 mm
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Aperture f/1.4
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Diameter 64 mm
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Max focal length 50 mm
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Weight 221 g
#10

Pentax SMC HD DA 21mm f/3.2 AL

Pentax SMC HD DA 21mm f/3.2 AL
 
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Quite short
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25 mm
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Focus motor Generic motor
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Length 25 mm
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Zoom range 1x
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Min focal length 21 mm
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Aperture f/3.2
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Diameter 64 mm
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Max focal length 21 mm
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Weight 119 g