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From: John VanSickle
Subject: Test
Date: 4 Jun 2002 14:44:23
Message: <3CFD0A2B.8E3FE0D7@hotmail.com>
These three images use three lighting models;

#1 has one area light, with ambient set to 0 for all textures.
#2 has the same light, and an ambient setting of .1.
#3 has the same light, at a slightly lower intensity, plus two faint
shadowless lights at right angles to the main light.  The ambient
value of all textures is 0.


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Attachments:
Download 'test1.jpg' (69 KB) Download 'test2.jpg' (70 KB) Download 'test3.jpg' (70 KB)

Preview of image 'test1.jpg'
test1.jpg

Preview of image 'test2.jpg'
test2.jpg

Preview of image 'test3.jpg'
test3.jpg


 

From: Greg M  Johnson
Subject: Re: Test
Date: 4 Jun 2002 14:49:34
Message: <3cfd0bbe$1@news.povray.org>
eeeeeeeeeeeeeeeeeeeeeeevvvviiiiiiiiiiiiilllllllllllllllllllllllllll!





(a quote from a recent Spongebob episode!)


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From: Jan Walzer
Subject: Re: Test
Date: 4 Jun 2002 15:04:25
Message: <3cfd0f39$1@news.povray.org>
where's the difference ?


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From: John VanSickle
Subject: Re: Test
Date: 4 Jun 2002 15:17:57
Message: <3CFD1254.CEF63C5@hotmail.com>
Jan Walzer wrote:
> 
> where's the difference ?

The part of TC that is in the shade is much more natural-looking, at
least to my eye.

I also notice that some of the stuff in the first (ambient = 0) pic
is still visible, which means my textures aren't consistent...


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From: Jan Walzer
Subject: Re: Test
Date: 4 Jun 2002 16:55:17
Message: <3cfd2935@news.povray.org>
now, from the lack of any environment, I'm not able to tell
any scene to be real...

But if I'd imagine a nice background/environment to what I'm seeing,
wouldn't be able to tell any of three to be wrong ...

so it _is_ promising, but probably I shouldn't have answered at all
as I'm not able to tell any right/wrong lighting...

(thinking about this: I often have problems setting up my own lighting)


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From: David Fontaine
Subject: Re: Test
Date: 4 Jun 2002 23:43:27
Message: <3CFD8A1F.3080308@faricy.net>
I would expect more to be visible than is in the first two, but I'm not 
sure how accurate the third is.  (Is this supposed to be outdoor?)  It's 
a matter of the perception of contrast; photographic compression would 
be a great feature for POV.

-- 
David Fontaine  <dav### [at] faricynet>  ICQ 55354965
My raytracing gallery:  http://davidf.faricy.net/


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From:
Subject: Re: Test
Date: 5 Jun 2002 02:17:37
Message: <b2brfug3j8ghbsaoo248uulnftmaf8n70p@4ax.com>
On Tue, 04 Jun 2002 20:42:51 +0200, John VanSickle <evi### [at] hotmailcom>
wrote:
> These three images use three lighting models;
> #1 has one area light, with ambient set to 0 for all textures.
> #2 has the same light, and an ambient setting of .1.
> #3 has the same light, at a slightly lower intensity, plus two faint
> shadowless lights at right angles to the main light.  The ambient
> value of all textures is 0.

Nice tests. What is the question ?

ABX

BTW: Have you compared this with radiosity ? I know that You don't want
radiosity for 20-minutes per frame animation but could be worth to compare
result.


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From: Hugo
Subject: Re: Test
Date: 5 Jun 2002 05:01:26
Message: <3cfdd366$1@news.povray.org>
I'd say number 3 is best because it shows the shape better than ambient
light ever does.


Regards,
Hugo


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From: Samuel Benge
Subject: Re: Test
Date: 5 Jun 2002 13:59:50
Message: <3CFE5617.90809@caltel.com>
The third looks best, IMO. I'm surprised shadowless lights worked so 
well. The 'OK' on the robot's lcd is a little ominous....

John VanSickle wrote:

> These three images use three lighting models;
> 
> #1 has one area light, with ambient set to 0 for all textures.
> #2 has the same light, and an ambient setting of .1.
> #3 has the same light, at a slightly lower intensity, plus two faint
> shadowless lights at right angles to the main light.  The ambient
> value of all textures is 0.
> 

-- 
Samuel Benge

sbe### [at] caltelcom


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From: Alf Peake
Subject: Re: Test
Date: 5 Jun 2002 18:47:23
Message: <3cfe94fb@news.povray.org>
I prefer #3 because it shows more detail on the front. However, I
guess this bot is supposed to be menacing and #2 would be my choice
with its "face" in shadow. #1's shadow is too harsh for my eyes.

Alf


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