"SomeOne" <ask### [at] yahoocouknospam> wrote in message
news:40e2f78e$1@news.povray.org...
> I have this simple scene (see below). I want to render this scene
> at -w640 -h360. As per the manual, I adjusted the camera 'right' and 'up'
> vector to allow for the different aspect ratio. However, as you will
notice
> when you render this scene, the spheres in the corners look distorted.
I've
> tried different settings for 'right' and 'up' but can't find a proper
setting.
> IMHO all three spheres should look round. It seems only natural someone
has
> already found the right camera settings for a 16:9 A/R.  Please share them
with
> me, because I'm at a loss here.
>
> Thanks for your time,

why spheres at the edge of images distort is in the FAQ i think.
http://tag.povray.org/povQandT/misconceptions.html#perspectivespheres

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