On 05/11/2014 17:13, Alain wrote:
>>
>
> The Max Level entry is for max_trace_level and always apply. The
> presance of any isosurface don't mather.
> This mean that, in this case, a single ray can have up to 20 reflections
> or refractions before POV-Ray gives up.
>
> There are no messages regarding max_intersections.
> max_intersections/all_intersections applys only to isosurfaces that are
> part of difference/intersection.

My local copy of the help file (Ver 3.62) only gives one entry under 
max_trace and that is for isosurface.
Using a modeller as I do adds another level of confusion. Thanks for 
correcting me. :-)

-- 

Regards
     Stephen

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