Subject:
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Re: Fog yourself
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Newsgroups:
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lugnet.cad.ray
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Date:
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Wed, 12 Feb 2003 16:46:02 GMT
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Reply-To:
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Rob Hendrix <rob@msltc.&AntiSpam&org>
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Viewed:
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678 times
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I'm no expert so take my advice at face value, which = zero.
I was taking a look at your ground fog renders and noticed something that I
felt was odd.
I would figure that if you were in a fog environment, then you would get no
shadows or very faint shadows from light source in the fog (or above or
behind) like is shown at the base of youe "pole". If any, I would think the
shadows would go towards the fog or be very faint. I assume this, because
one would think that the fog is a darker area than the foreground. Am I way
off base here? Oh well, human perception of what each person sees is always
different anyway...
Nice job nonetheless.
-Rob
"Jeroen de Haan" <info@digitalbricks.nl> wrote in message
news:HA7Dvy.qH@lugnet.com...
> Hi all,
>
> After some e-mails with Albert-Jan van Ree, in which he tried to figure • out
> fog, I did some experimenting. The effect Albert-Jan was after (and • actually
> me too) was making the background foggier than the foreground. I have • tried
> it before with the standard fog (ambient fog in the PR3.5 insert menu) and
> the results are shown here: http://www.digitalbricks.nl/fog/ . There are 4
> images with fog distance 250, 500, 1000 and 2000. I didn't find the • result
> satisfying, it's a bit all or nothing. I even tried altering the fog's • color
> filter but it wasn't actually what I wanted (the last 2 images).
>
> Ground fog gave a much better result. I thought ground fog would be low on
> the ground (hence the name) but it gave the result I (and Albert-Jan) was
> after. Look here: http://www.digitalbricks.nl/groundfog/
> The first 4 images are just some test images, the last 4 are images are
> somewhat more realistic: an ICE model by James Mathis with 3 ground fog
> distances: 1250, 2500 and 5000. The last images is sans fog.
>
> Question remains: who to do real ground fog? I know Ahui did a poem with • an
> images of a graveyard with some eerie groundfog. Mabye he can share us his
> parameters?
>
> Happy rendering, Jeroen
>
> PS Creme de la creme is using fog AND the atmospheric media. This makes it
> more realistic but also slower to render. Will post result on brickshelf
soon.
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Message has 1 Reply:
 | | Re: Fog yourself
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| (...) You are right off course. But the goal was to understand POV-Ray's fog. As I wrote in my PS: if you want real looking fog also include atmospheric media. (...) Thanx! Jeroen (22 years ago, 12-Feb-03, to lugnet.cad.ray)
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Message is in Reply To:
| | Fog yourself
|
| Hi all, After some e-mails with Albert-Jan van Ree, in which he tried to figure out fog, I did some experimenting. The effect Albert-Jan was after (and actually me too) was making the background foggier than the foreground. I have tried it before (...) (22 years ago, 12-Feb-03, to lugnet.cad.ray)
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