POV-Ray : Newsgroups : povray.advanced-users : Shifting focus : Re: Shifting focus Server Time
29 Jul 2024 02:30:16 EDT (-0400)
  Re: Shifting focus  
From: Warp
Date: 8 Mar 2003 15:15:55
Message: <3e6a4f7b@news.povray.org>
Andrew Coppin <orp### [at] btinternetcom> wrote:
> But anyway, as he looks down the road, they do a camera trick where the
> foreground seems to move away, and yet the background gets nearer.

  Sounds like the "vertigo" effect (or sometimes called "contra-zoom") used
in many movies (most notably in the Hitchcock's "Vertigo" movie for first
time).
  Usually the effect is done so that the foreground seems to stay where
it is but the background seems to move away. What you describe sounds
like the inverse of this effect, but the principle is exactly the same.

  The way to achieve this effect (if it really is what you are looking
for) is very simple: Move the camera away from the look_at point and
decrease the viewing angle at the same time (or if you want the
"classical" effect, do it the other way around).

-- 
plane{-x+y,-1pigment{bozo color_map{[0rgb x][1rgb x+y]}turbulence 1}}
sphere{0,2pigment{rgbt 1}interior{media{emission 1density{spherical
density_map{[0rgb 0][.5rgb<1,.5>][1rgb 1]}turbulence.9}}}scale
<1,1,3>hollow}text{ttf"timrom""Warp".1,0translate<-1,-.1,2>}//  - Warp -


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