in news:3b9a9a27@news.povray.org Warp wrote:

>   If I, however, specify some max_gradient (eg 2.41) then evaluate
>   in POV3.5 gives 2.308, which makes more sense.

Not completely sure, I think during pre-beta testing it was mentioned 
that while using evaluate, a value for max_gradient is also required. 
If this can be confirmed, I'll put it in the docs.

Ingo

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