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Camera
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Pentax K-1
Lens category
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Pentax K-1

Pentax K-1 Lenses that have a 300mm or longer focal length and have a f/4 or faster aperture

#1

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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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
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Zoom range 5.5x
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Length 112 mm
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Min focal length 55 mm
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Auto focus Yes
#2

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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Aperture f/4
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Diameter 84 mm
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Max focal length 300 mm
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Weight 1.1 kg
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Zoom range 1x
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Length 183 mm
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Min focal length 300 mm
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Auto focus Yes
#3

Sigma 18-300mm f/3.5-6.3 DC MACRO HSM Contemporary Pentax K

Sigma 18-300mm f/3.5-6.3 DC MACRO HSM Contemporary Pentax K
 
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Great zoom range
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16.7x
 
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Wide angle lens
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18 mm
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Aperture f/3.5
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Diameter 79 mm
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Max focal length 300 mm
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Weight 0.6 kg
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Zoom range 16.7x
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Length 102 mm
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Min focal length 18 mm
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Auto focus Yes
#4

Sigma 70-300mm f/4-5.6 DG Macro Pentax K

Sigma 70-300mm f/4-5.6 DG Macro Pentax K

"toolk a little getting used to but love it" bhphotovideo.com

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Aperture f/4
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Diameter 77 mm
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Max focal length 300 mm
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Weight 0.5 kg
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Zoom range 4.3x
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Length 120 mm
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Min focal length 70 mm
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Auto focus Yes
#5

Tamron 70-300mm f/4-5.6 Di LD Macro Pentax K

Tamron 70-300mm f/4-5.6 Di LD Macro Pentax K

"Great lens, very durable and inexpensive! You can't beat this with a stick! Don't hesitate to buy!" bhphotovideo.com

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Aperture f/4
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Diameter 76 mm
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Max focal length 300 mm
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Weight 435 g
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Zoom range 4.3x
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Length 117 mm
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Min focal length 70 mm
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Auto focus Yes
#6

Sigma 300mm f/2.8 EX DG Pentax K

Sigma 300mm f/2.8 EX DG Pentax K

"It's much much sharper, even with a 1.4 TC. I highly recommend this lens." bhphotovideo.com

 
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Wide aperture
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f/2.8
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Aperture f/2.8
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Diameter 119 mm
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Max focal length 300 mm
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Weight 2.4 kg
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Zoom range 1x
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Length 213 mm
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Min focal length 300 mm
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Auto focus Yes
#7

Sigma 70-300mm f/4-5.6 APO DG Macro Pentax K

Sigma 70-300mm f/4-5.6 APO DG Macro Pentax K

"I love using this lens on my Pentax Digital camera. It has a good overall range, and the results are sharp and crisp." bhphotovideo.com

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Aperture f/4
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Diameter 76 mm
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Max focal length 300 mm
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Weight 0.6 kg
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Zoom range 4.3x
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Length 120 mm
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Min focal length 70 mm
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Auto focus Yes
#8

Tamron 28-300mm f/3.5-6.3 XR Di Pentax K

Tamron 28-300mm f/3.5-6.3 XR Di Pentax K

"We like the 300 mm zoom for bird photos. The auto focus is nice for first time users and occasional users." bhphotovideo.com

 
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Great zoom range
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10.7x
 
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Wide angle lens
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28 mm
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Aperture f/3.5
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Diameter 74 mm
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Max focal length 300 mm
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Weight 420 g
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Zoom range 10.7x
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Length 84 mm
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Min focal length 28 mm
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Auto focus Yes