I known it's in German, butb this page by Sigma might be bhelpful:

http://www.sigma-foto.de/cms/bildwinkel/brennweitenvergleich.html

it shows you in Fleash a comparison between lenses from 10mm to 800mm, macro, converters etc.

You're shure it's a photograph, and not created with Vue, Bryce, WorlBuilder, Terragen or any other landscape soft? It looks rather unreal to me.

There are no Borg. All resistance is fertile.