"Warp" <war### [at] tagpovrayorg> wrote:
> >>   I think +r4 should be enough.
> > probably not enough, if dealing with 16Bit/Chan images ...
> I don't understand how the color depth would have any influence in the
> need to shoot more rays.

really ?

If you use +r4 there will be shoot 256 (+AM2) samples per pixel (at max) ...
... this will mean, that this very pixel has a granted accuracy of 1/256 (in
the worst case) ...

... probably enough for a 8Bit/Channel image, as you can't store any more ...

however, in a 16Bit/Channel image, you may want to have the accuracy of at
least 16Bit...

.. this means, however, that you'll need (for the worst case), to shoot 65535
Samples per pixel...
... and this means, you'll need +R8 ...

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