30cm 120 Degrees Ov5647 Camera Module For Raspberry Pi Zero Board Hd 5mp 1080p Camera Module Lens Adjustable Focal Length - Integrated Circuits - AliExpress
Variable Focal-Length Lenses
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Adjustable focal length 3.6mm lens - Underwater fixed camera for seawa – Barlus
Understanding Focal Length and Field of View | Vision Systems Design