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

- The altitude of the observer.
- The field of view of the camera.
- 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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