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Pentax K Lenses that have a 100mm or longer focal length and have a f/2.8 or faster aperture

#1

Pentax SMC DA FA 100mm f/2.8 WR Macro

Pentax SMC  DA FA 100mm f/2.8 WR Macro

"I bought this in conjunction with the 160fc ringflash, perfect match for this lens.. Aside from being exellent at macro, I found this lens to be stuningly vibrant and contrasty for normal shooting.." bhphotovideo.com

 
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Quite short
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64 mm
 
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Supports autofocus
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Easier to use
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Max focal length 100 mm
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Min focal length 100 mm
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Aperture f/2.8
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Weight 340 g
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Auto focus Yes
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Zoom range 1x
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Length 64 mm
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Diameter 81 mm
#2

Pentax SMC HD D FA* 70-200mm f/2.8 ED DC AW

Pentax SMC HD D FA* 70-200mm f/2.8 ED DC AW
 
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Supports autofocus
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Easier to use
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Max focal length 200 mm
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Min focal length 70 mm
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Aperture f/2.8
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Weight 1.8 kg
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Auto focus Yes
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Zoom range 2.9x
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Length 203 mm
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Diameter 92 mm
#3

Pentax SMC DA* 200mm f/2.8 ED SDM

Pentax SMC  DA* 200mm f/2.8 ED SDM

"Extremely well built, weather sealed, fast, and sharp at all F-stops." bhphotovideo.com

 
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Supports autofocus
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Easier to use
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Max focal length 200 mm
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Min focal length 200 mm
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Aperture f/2.8
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Weight 0.8 kg
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Auto focus Yes
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Zoom range 1x
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Length 135 mm
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Diameter 84 mm
#4

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

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

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

 
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Supports autofocus
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Easier to use
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Max focal length 135 mm
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Min focal length 50 mm
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Aperture f/2.8
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Weight 0.7 kg
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Auto focus Yes
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Zoom range 2.7x
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Length 137 mm
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Diameter 76 mm
#5

Rokinon 135mm f/2 ED UMC Pentax K

Rokinon 135mm f/2 ED UMC Pentax K
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Max focal length 135 mm
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Min focal length 135 mm
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Aperture f/2
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Weight 0.8 kg
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Auto focus No
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Zoom range 1x
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Length n/a
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Diameter n/a
#6

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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Supports autofocus
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Easier to use
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Max focal length 200 mm
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Min focal length 70 mm
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Aperture f/2.8
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Weight 1.1 kg
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Auto focus Yes
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Zoom range 2.9x
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Length 193 mm
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Diameter 89 mm
#7

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

Placeholder
 
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Supports autofocus
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Easier to use
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Max focal length 135 mm
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Min focal length 50 mm
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Aperture f/2.8
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Weight 0.7 kg
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Auto focus Yes
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Zoom range 2.7x
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Length n/a
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Diameter n/a
#8

Rokinon 100mm f/2.8 Macro Pentax K

Rokinon 100mm f/2.8 Macro Pentax K
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Max focal length 100 mm
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Min focal length 100 mm
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Aperture f/2.8
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Weight 0.7 kg
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Auto focus No
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Zoom range 1x
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Length 122 mm
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Diameter 73 mm
#9

Samyang 100mm f/2.8 ED UMC Macro Pentax K

Placeholder
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Max focal length 100 mm
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Min focal length 100 mm
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Aperture f/2.8
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Weight 0.7 kg
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Auto focus No
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Zoom range 1x
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Length 122 mm
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Diameter 73 mm
#10

Samyang 135mm f/2 ED UMC Pentax K

Samyang 135mm f/2 ED UMC Pentax K
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Max focal length 135 mm
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Min focal length 135 mm
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Aperture f/2
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Weight 0.8 kg
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Auto focus No
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Zoom range 1x
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Length 121 mm
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Diameter 82 mm