Long focus can be achieved in a flight simulator by using a curved mirror instead of a display screen
<a href="//commons.wikimedia.org/w/index.php?title=User:Ian_W_Strachan&amp;action=edit&amp;redlink=1" class="new" title="User:Ian W Strachan (page does not exist)">Ian W Strachan</a>
<span class="int-own-work" lang="en">Own work</span>