Lens Focal Length + Angle of View (Part One) - The Nerdy Photographer
First Steps
2.1mm focal length wide angle FOV 160 degree CS mount cctv lens 1/2.7" F1.6 2.1 mm fixed 140 deg mp csmount camera lenses
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Amazon.com : 1.8mm 180° Wide Angle Board Lens, HD 5mp Fisheye View CCTV Wide Angle Camera for CCTV Cameras : Electronics
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Understanding Focal Length and Angle of View
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