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Type

Prime Lenses for less than $700 that have a 300mm or longer focal length and have a f/4 or faster aperture

#1

Canon EF 400mm f/4 DO IS USM

Canon EF 400mm f/4 DO IS USM

"The lens is super sharp, lightweight compared to equivalent EF L lens with IS. I find myself using this lens more and more. Adapts well to Canon's 1.4X TC with little loss of IQ, although AF speed suffers a tiny bit. Never need a tripod with this baby!!" bhphotovideo.com

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Max focal length 400 mm
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Diameter 127 mm
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Aperture f/4
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Auto focus Yes
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Weight 1.9 kg
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Zoom range 1x
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Length 231 mm
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Fisheye No