The Amount of Curvature that Appears in Photographs of the Horizon

The amount of horizon curvature that appears in a photograph of the horizon depends on several factors:

  1. The altitude of the observer.
  2. The field of view of the camera.
  3. Lens distortions of the camera.

Some flat-Earthers assume that we should see the same amount of Earth’s curvature everywhere. And when they see the different amount of curvature in the different picture of Earth’s curvature, they wrongly took it as “proof” of some sort of misconduct.

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In photography, bokeh is the way a camera lens renders out-of-focus points of lights. The shape of bokeh depends on the camera lens more than the out-of-focus objects themselves.

Some flat-Earthers do not know how to take correctly focused pictures of distant planets and stars due to their lack of knowledge and the unsuitability of their camera for the purpose. All they are getting are bokeh, which does not tell us much about the intended objects.

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