I compared two five-star webcams Logitech C270 and Genius F100. Both advertise that they are wide-angle cameras. I took each camera and installed them in the same place on my computer monitor. I sit two feet in front of the camera and the closet is two meters away. Logitech is the closest to the dimensions, but for a wide-angle, the Genius clearly wins. See attached photo, Logitech is on top.
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