POV-Ray : Newsgroups : povray.general : focal blur at great distances : focal blur at great distances Server Time
4 Aug 2024 18:15:48 EDT (-0400)
  focal blur at great distances  
From: Greg M  Johnson
Date: 3 Mar 2003 10:50:18
Message: <3e6379ba@news.povray.org>
I wanted to simulate a telescope:  First have the focal point go from near
the camera to an object far away (<<10 units tall but >100 units away).

I found that the aperture settings only gave me two results:

1) Nothing is really blurry at all.
2) Everything is really blurry, including an object placed at  the
focal_point .


I desired to have a faraway object be in focus but objects twice the
distance (focal_point - camera_location)  to be blurry.


It almost seems like we're missing a parameter, or that the effect of the
aperture is messed up by the scale of the scene you're in.


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