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From joheriks@abo.fi:
Good tree shapes and the orb is cool, but the gray shapes in the background seem
a little unrealistic.
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From rich@brickbots.com:
Forests are great places to play with light and fog.  Your focal point is
strong, but after absorbing it there is not much else to look at.  Including
another light source (maybe a moon?) would have given the eye another place to
explore.  While the pattern of the trees above the horizon line is interesting,
the way the fog/trees/ground interact creates a large grey void across the
center of your composition.

Since the fog only seems to affect the trees, the pattern of light and dark is
almost reveresed.  It seems to me that the sky would also be affected and you
would get an interesting sort of gradient affect as you went back in space. 
The trees close to the light orb would be strongly lit, and there should be
some form (as there is in the very, very close dead branches).  As the light
from the orb fades with distance, you would get dark shapes of the trees
against (and sometimes obscured by) the fog in the distance.  The ultimately
even these dark tree-shapes would be lost to the fog (but never entirely to
provide some texture to the background).  

I don't know much about your renderer, but adding some texture to the fog (heavy
and light areas) along with attenuation of the light over distance and making
the fog affect the sky would probably add a wonderful sense of depth to the
image.

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From hildurka@simnet.is:
This is an unusual effect you get from using fog, as it 
seemes to turn the background into a negative inverted 
image. Guess your software is causing this as you don_t 
mention this in your text as being intentional. But this 
makes your image only more interesting. Wonder if I can 
do the same in Povray? Great work!

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From dungbeatle@mail.tds.net:
The fog looks very strange to me. 

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From sshelby@shelbyvision.com:

The background looks like a negative image, rather than fog.


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From glenn@mccarters.net:
It looks like a negative!  Take a look at some trees against the sky at =
night: you will see the trees will be darker than the sky, not lighter.
Very intriguing image.  Mystical.  I really like the magical glowing =
sphere.




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From file:
cool looking results with the effects, although not particularly realistic in
the trees (why is it so black behind them?).  nice use of theme.
Notable for composition, lighting