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Pentax K Lenses for less than $500 that have a 300mm or longer focal length

#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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Max focal length 300 mm
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Diameter 71 mm
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Zoom range 5.5x
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Length 112 mm
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Aperture f/4
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Weight 466 g
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Min focal length 55 mm
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Auto focus Yes
#2

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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Max focal length 300 mm
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Diameter 79 mm
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Zoom range 16.7x
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Length 102 mm
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Aperture f/3.5
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Weight 0.6 kg
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Min focal length 18 mm
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Auto focus Yes