Again, you have it backwards. The oil rig which is furthest away, is 10 miles from the camera. Based on the curvature of the earth, (which is easily calculated using various online tools), this rig should be hidden by the curve of the earth, and the horizon should be blocking the lower part of this rig.
But, with camera tech, this oil rig can be seen, and is not hidden by the horizon. Ergo, there is no curve of the earth. Ergo, FE.