According to the POV help:
The process continues until it reaches 1*1 pixels or until it reaches the
size you set with Preview_End_Size=n or +EPn. Again the value n should be a
number greater than zero that is a power of two and less than or equal to
Preview_Start_Size. If it is not a power of two, the nearest power of two
less than n is substituted. The default ending value is 1. If you set
Preview_End_Size to a value greater than 1 the mosaic passes will end before
reaching 1*1, but POV-Ray will always finish with a 1*1. For example, if you
want a single 8*8 mosaic pass before rendering the final image, set
Preview_Start_Size=8 and Preview_End_Size=8.

And that's what I did.  Now I understand - it will go from 8, then to 1,
instead of 8,4,2,1 - hmmm - too bad - that's not what I want to do.  Its for
an animation of 450 frames - and to render a very small image, then resize
it larger for 450 frames is a lot of work.  I guess letting it run overnight
is what I need to do....



--
Mike

wk: mik### [at] pyxiscom  www.pyxis.com
hm: mwe### [at] sciticom  www.geocities.com/mikepweber


"Thorsten Froehlich" <tho### [at] trfde> wrote in message
news:390f01b9$1@news.povray.org...
> In article <390ee6a0@news.povray.org> , "Mike Weber"
<mik### [at] pyxiscom>
> wrote:
>
> > I was trying to use these commands in my ini file for an animation:
> >
> > Preview_Start_Size = 8
> > Preview_End_Size = 8
> >
> > It started with the size of 8, but completed the image with size of 1 -
but
> > I want it to complete with size of 8.
> >
> > Why does it do that?  What is wrong with my statements?
>
> Nothing, this is exactly how it works. It is _preview_ only as clearly
> explained in the documentation. If you set the end size smaller, it will
> first generate previews down to that resolution and the switch to the
final
> step with full resolution.
>
> If you want it to end with 8, just divide the image width and height by 8,
> which gives you exactly the result (preview is not needed for this). Then
> scale the image to 800% in a paint program. This will have (nearly) the
same
> effect as preview 8.
>
>
>      Thorsten

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