I don't have an answer either, but from the looks of this image, which
looks to be enlarged to almost the nonoscopic level:-) you could hardly
notice these variances.

Julius Klatte wrote:

> Strange...
> I always thought that POV-ray's rendered images were always
> exactly the same for the same code, like with 'normal'(?)
> instructions.
>
> Example: if you calculate tan 1 with a calculator, you
> always
> get the same result: 1.55740772465490223050697480745836(...)
>
> However, it appears this doesn't work this way for POV-ray
> image output (?).
> I've rendered the same POV code more than once on the same
> computer without using any jittering or crand or any other
> random
> function that I know of. The results were slightly
> different, as
> you can see in the attached image (that's why I posted it in
> this group)
> (close-ups of the rendered images).
> Can anybody tell me why the output is different?
>
> Just wondering...
>
> Julius
>
>  [Image]

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