Flat Earth? Mt Coonowrin and the Tambourine Plateau, Australia
Channel: Andrew Eddie
Date: 15/09/2017

Approx. camera location: 26°46'54.63"S, 152°52'50.74"E
Approx. camera elevation: 427 metres above sea level
Original photo: https://www.flickr.com/photos/fishyone1/14652112495
Terrain profile: http://www.geocontext.org/publ/2010/04/profiler/en/?topo_ha=2017097810722159
Spreadsheet analysis: https://docs.google.com/spreadsheets/d/1RK82o4K85ZNWpQHdgeVAxQJ5cZSkixPY8QoxgsSBIRk/edit?usp=sharing

The key to this picture is finding a view where there is a subject in the foreground that is below your eye level, and where there is a subject in the background that is physically higher than your eye level yet appears below the top of the foreground object. This provides an excellent example of where the effects of the curvature can be seen in plain sight.

Perspective does indeed affect the perceived height of the objects relative to the observer. Things further away will look smaller. However, perspective cannot alter the real height of objects, nor can perspective bend perfectly straight lines. Objects below your eye level are actually below eye level no matter how big or small they are. Similarly, objects above your eye level remain physically above you no matter how close or distant they are.

In other words, you will still look “up” to objects higher than you, and you will still look “down” on objects below you.