PanoTools:
Re: entrance pupil - nodal point
Erik Krause 2004-Nov-12 14:22:01
On 12 Nov 2004 at 7:34, John Houghton wrote:
> This animated diagram will show what happens
> when you rotate a thick lens with an aperture in front (in this case,
> the entrance pupil) around the front nodal point, which is inside the
> lens.
>
> http://homepage.ntlworld.com/j.houghton/nodalmov.gif
What you show here is the example of a pinhole camera. If you follow
the light rays further to the right, you would see that there is only
one rotational position of the lens, where A and B are together on
the film - the position where A, B and N1 are on the same straight
line. Such a narrow aperture in front of the lens simply limits the
field of view...
best regards
--
Erik Krause
Ressources, not only for panorama creation:
http://www.erik-krause.de/
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