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Pentax K-x
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Pentax K-x

Pentax K-x Lenses

Learn more about the Pentax K-x

#1

Pentax SMC FA 50mm f/1.4

Pentax SMC  FA 50mm f/1.4

$447

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

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Wide aperture
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f/1.4
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Quite short
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38 mm
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Fixed aperture n/a
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Aperture f/1.4
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Zoom range 1x
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Length 38 mm
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Image stabilization None
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Max focal length 50 mm
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Focus motor None
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Weight 222 g
#2

Sigma 18-125mm f/3.8-5.6 DC OS HSM Pentax-k

Sigma 18-125mm f/3.8-5.6 DC OS HSM Pentax-k

$339

"Lens has excellent speed and sharpness."

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More advanced image stabilization
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Sigma OS
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Great zoom range
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6.9x
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Fixed aperture No
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Aperture f/3.8
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Zoom range 6.9x
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Length n/a
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Image stabilization Sigma OS
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Max focal length 125 mm
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Focus motor Sigma HSM
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Weight 0.5 kg
#3

Sigma 70-200mm f/2.8 II EX DG APO Macro HSM Pentax-k

Sigma 70-200mm f/2.8 II EX DG APO Macro HSM Pentax-k

$799

"I purchased this product to shoot soccer photos and as a replacement for a 70-300mm f4.5-5.6 lens in order to shoot "under the lights". I have not been dissappointed."

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Fixed aperture
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The same aperture at all focal lengths
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Fixed aperture Yes
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Aperture f/2.8
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Zoom range 2.9x
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Length 184 mm
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Image stabilization None
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Max focal length 200 mm
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Focus motor Sigma HSM
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Weight 1.4 kg
#4

Sigma 18-50mm f/2.8-4.5 DC OS HSM Pentax-k

Sigma 18-50mm f/2.8-4.5 DC OS HSM Pentax-k

$199

"This is a solid lens. I'm not 100% convinced the OS in this lens is an improvement over the body image stabilization, but it seems to be roughly equivalent."

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More advanced image stabilization
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Sigma OS
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Fixed aperture No
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Aperture f/2.8
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Zoom range 2.8x
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Length n/a
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Image stabilization Sigma OS
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Max focal length 50 mm
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Focus motor Sigma HSM
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Weight 395 g
#5

Pentax SMC DA* 50-135mm f/2.8 ED SDM

Pentax SMC  DA* 50-135mm f/2.8 ED SDM

$1,397

"The build quality seems top notch, no play in the focus or zoom rings at all, and very smooth action of both."

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Fixed aperture
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The same aperture at all focal lengths
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Fixed aperture Yes
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Aperture f/2.8
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Zoom range 2.7x
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Length 136 mm
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Image stabilization None
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Max focal length 135 mm
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Focus motor Pentax SDM
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Weight 0.7 kg
#6

Sigma 10-20mm f/3.5 EX DC HSM Pentax-k

Sigma 10-20mm f/3.5 EX DC HSM Pentax-k

$649

"This lens is absolutely great for scenery and landscape. I did a lot of research for a good wide-angle lens and for the price this lens was definitely my favorite."

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Fixed aperture
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The same aperture at all focal lengths
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Fixed aperture Yes
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Aperture f/3.5
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Zoom range 2x
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Length 88 mm
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Image stabilization None
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Max focal length 20 mm
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Focus motor Sigma HSM
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Weight 0.5 kg
#7

Tamron 18-200mm f/3.5-6.3 XR Di-II Macro Pentax-k

Tamron 18-200mm f/3.5-6.3 XR Di-II Macro Pentax-k

$290

"It was already an excellent buy, but the rebate made it even more terrific. It will be my "all-in-one" lens on my Pentax K-x, as its range from 27mm to 300mm is all I need."

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Great zoom range
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11.1x
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Fixed aperture No
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Aperture f/3.5
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Zoom range 11.1x
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Length 84 mm
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Image stabilization None
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Max focal length 200 mm
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Focus motor None
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Weight 423 g
#8

Sigma 17-70mm f/2.8-4 DC Macro OS HSM Pentax-k

Sigma 17-70mm f/2.8-4 DC Macro OS HSM Pentax-k

$449

"The is a great upgrade from a kit lens. Good focal length range, speed and macro ability."

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More advanced image stabilization
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Sigma OS
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Fixed aperture No
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Aperture f/2.8
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Zoom range 4.1x
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Length 83 mm
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Image stabilization Sigma OS
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Max focal length 70 mm
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Focus motor Sigma HSM
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Weight 0.5 kg
#9

Sigma 50-200mm f/4-5.6 DC OS HSM Pentax-k

Sigma 50-200mm f/4-5.6 DC OS HSM Pentax-k

$159

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More advanced image stabilization
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Sigma OS
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Fixed aperture No
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Aperture f/4
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Zoom range 4x
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Length 102 mm
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Image stabilization Sigma OS
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Max focal length 200 mm
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Focus motor Sigma HSM
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Weight n/a
#10

Sigma 50-150mm f/2.8 II EX DC HSM Pentax-k

Sigma 50-150mm f/2.8 II EX DC HSM Pentax-k

$749

"Well built, nicely damped MF, fast accurate AF, acceptably sharp wide open, even better at F/4, and really pleasing bokeh."

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Fixed aperture
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The same aperture at all focal lengths
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Fixed aperture Yes
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Aperture f/2.8
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Zoom range 3x
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Length 135 mm
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Image stabilization None
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Max focal length 150 mm
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Focus motor Sigma HSM
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Weight 0.8 kg