What are you trying to prove with these pictures?
Again, and try to get it through your thick skull this time: It is not possible to capture the curvature of the earth on film with a such a narrow angle viewed camera.
Lets look at your last picture where the sun is at the very left of the picture. the viewing angle is so narrow, you cannot accurtely measur that the sides are a bit lower than the center. this will be worse with video. if you were making a video of it and you turn your camera to the left (to get the sun in the middle), the part of the horizon in the middle of the picture would go up just a little and the sides would go down.
So, standing on top of a building and turning your video camera around to film the complete horizon would't help you capturing the curvature...so just forget it