http://files.getdropbox.com/u/1013446/distancedisappear.cap
a little awkward I know, but use the arrow keys to move around and get a decent view
drag the little blue box at the bottom to set the zoom
the color fade of the boxes is set at startup, so you can use it to tell which sprite is disappearing
you'll notice that as you zoom in, the sprites in the distance disappear