"Nathan Kopp" <nat### [at] koppcom> wrote in message
news:3ba7ff4a@news.povray.org...
>
> "Rune" <run### [at] mobilixnetdk> wrote...
> > The attached image shows how I think the fisheye camera should work.
Right
> > now it completely ignores the up and right vectors in the camera, but I
> > think the up and right vector should be used to "stretch" the image,
just
> > like for the other camera types. I've compared the requested fisheye
> > behavior to that of the perspective camera.
>
> Does anybody have any comments about this?

I thought the ultra_wide_angle camera was the rectangular (or square, all
dependant on aspect used) version of the fisheye camera.  If so then no need
to change fisheye, if not then a fullview aspect changeable fisheye lens is
an okay idea far as I'm concerned.

> An likely alternative would be to have the last two scenes:
>     up y   right x*2
> and
>     up 0.5*y    right x
> be equivilent.
>
> That would better mimic the behavior of the perspective camera, where
these
> two cameras would be equivilent.  This provides better consistency across
> camera types, though it does sacrifice some flexibility.
>
> The desired effect (a zoomed-in view of the fisheye lens) could be
achieved,
> though, by using POV's partial-render capibilities.
>
> Comments?

See above, please.

Bob H.

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