WaBis

walter.bislins.ch

The True Face of the Earth, Camera Distance matters

Friday, July 21, 2017 - 01:21 | Author: wabis | Topics: FlatEarth, Knowlegde, Animation, Geometry
On different images of the earth from space the continents appear in different sizes, as in the picture above North America from 2002 and 2012. This has to do with Perspective and the distance of the camera from the Earth. Here I show in an animation how this effect works.

 Deutsche Version: Das Wahre Gesicht der Erde, Kameradistanz spielt eine Rolle

Perspektive of a Camera

If you take a picture of the earth from a low orbit, you have to use a wide-angle lens with a large FoV angle (Field of View) to fit the whole earth into the image. However, you can only see a part of the earth's hemisphere. The horizon is smaller than the circumference of the earth. Accordingly, the continents appear enlarged and distorted.

The larger the distance from the earth, the more one has to zoom in the earth so that it fills the picture. So it takes a smaller FoV angle. The visible horizon is getting bigger and bigger until you can see the full hemisphere of the earth. The continents now appear undisturbed in their proper size.

In the Space View on the right you can see the scene as the camera is photographing the earth. In the Camera View you can see what the camera sees from this perspective.

Video about this subject

There is a video from Vsauce on YouTube about this subject:

How Much of the Earth Can You See at Once?

Your Comment to this Article
Name
Email optional; wird nicht angezeigt
Comment
  • Name is displayed on your Comment.
  • Email is only for the Admin, will not be displayed.
  • You can edit or delete your Comment for some Time.
  • You can use Comment Formatings, eg Codes, Formulas...
  • External Links and Pictures will not be displayed, until enabled by the Admin.
Weitere Infos zur Seite
Erzeugt Thursday, August 10, 2017
von wabis
Zum Seitenanfang
Geändert Thursday, August 10, 2017
von wabis