The Newly 3.8mm f/2.8 82d HFOV 16MP (No Distortion) is a new that is a direct replacement for most action cameras like the GoPro Hero 4, SJCAM, XIAOMI YI and others. It is 17.5*21.05mm, nearly the same as gopro original ones.
It designed with 1/2.3" 16MP Low distortion < 2.8%, wider than popular 4.35mm and 5.4mm lens.
Specification:
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Focal Length: 3.8mm Lens
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Distortion: <2.8%
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Weight: 10g
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Field of View (D*H*V) :95°*82°*65°
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Aperture (f Stop): 2.8
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Back Focal Length (BFL): 5.59mm
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Native Camera Sensor Support: 1/2.3"