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Pentax K Lenses made by Tamron that have a f/2.8 or faster aperture

#1

Tamron 28-75mm f/2.8 XR Di Pentax K

Tamron 28-75mm f/2.8 XR Di Pentax K

"It is capable of stunning color and sharply isolated portraits with a very neat bokeh. I have 2 K100d bodies, a K20, and a K-x, and unlike my other lenses, it does equally good on all four of them! The bright f/2.8 ratio makes this a winner indoors and also outside for depth of field control." bhphotovideo.com

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Aperture f/2.8
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Diameter 73 mm
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Length 92 mm
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Weight 0.5 kg
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Max focal length 75 mm
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Zoom range 2.7x
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Min focal length 28 mm
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Auto focus Yes
#2

Tamron 17-50mm f/2.8 XR Di-II LD [IF] Pentax K

Tamron 17-50mm f/2.8 XR Di-II LD [IF] Pentax K

"The quality of the lens feels great and you come away feeling like you're getting a lot for your money. The ability to lock it into 17mm is handy for transportation and twisting it onto your body. The AF is audible but not loud enough to make it seem cheap." bhphotovideo.com

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Aperture f/2.8
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Diameter 74 mm
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Length 81 mm
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Weight 430 g
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Max focal length 50 mm
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Zoom range 2.9x
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Min focal length 17 mm
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Auto focus Yes
#3

Tamron 70-200mm f/2.8 Di LD Macro Pentax K

Tamron 70-200mm f/2.8 Di LD Macro Pentax K

"The colors are perfect, the sharpen is stupendous, the phenomenal focus and the DOF is very very beautiful." bhphotovideo.com

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Aperture f/2.8
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Diameter 89 mm
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Length 193 mm
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Weight 1.1 kg
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Max focal length 200 mm
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Zoom range 2.9x
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Min focal length 70 mm
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Auto focus Yes
#4

Tamron SP 90mm f/2.8 Di Macro Pentax K

Tamron SP 90mm f/2.8 Di Macro Pentax K

"This Tamron macro is a classic and has performance to back it up. It is sharp wide open and sharpness does not drop until f/16. Relative to the Pentax 100 f/3.5 macro, this Tamron is a tank." bhphotovideo.com

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Aperture f/2.8
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Diameter 71 mm
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Length 97 mm
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Weight 405 g
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Max focal length 90 mm
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Zoom range 1x
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Min focal length 90 mm
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Auto focus Yes