in <3af01891@news.povray.org> Geoff Wedig wrote:

>>  Or is this just the reading of the data file?
> 
> I would assume (perhaps incorrectly) that the pretrace would read
> in the file, just as it does when you do it manually.  Or is there
> something funky you do in the manual reads?

 Changed count from 80 to 1000 to see if there is a time difference. 
First pass the pretrace is finished after 18 min. Total render time, 45 
min.
 Second pass, reading the data/ pretrace, 4 min. Total render time 6 
min. Quite a big difference, I didn't notice in the earlier experiments 
as the total rendertime's where mutch shorter.

Ingo

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