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Vancouver downtown fisheye shot

Pentax K Fisheye lenses for less than $300 that have a focus motor and have a f/4 or faster aperture

#1

Pentax SMC DA 10-17mm f/3.5-4.5 ED

Pentax SMC  DA 10-17mm f/3.5-4.5 ED

"I am very pleased with this lens so far. It is built well and shots are very clear. " bhphotovideo.com

 
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Supports autofocus
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Easier to use
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Aperture f/3.5
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Zoom range 1.7x
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Focus motor Generic motor
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Weight 320 g
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Auto focus Yes
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Length 71 mm
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Diameter 69 mm
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Max focal length 17 mm
#2

Rokinon 8mm f/3.5 HD Pentax K

Rokinon 8mm f/3.5 HD Pentax K
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Aperture f/3.5
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Zoom range 1x
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Focus motor Generic motor
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Weight 428 g
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Auto focus No
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Length 77 mm
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Diameter 75 mm
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Max focal length 8 mm