Stephen nous apporta ses lumieres ainsi en ce 2004-12-19 02:22... :

>Hi and thanks for the info.
>
>In rating myself, I know I'm a LONG way from some of the experts here, given
>what I have seen (lots of positive challenges ahead), but my strong math and
>programming skills suggest that I'm a reasonably capable newbie.
>
>Where I'm having some troubles is in fine-tuning things such as lighting.
>Therefore I appreciate your comments that .... "you'd do this, this & that"
>as a matter of *your* standards.  In other words it works for you and it's
>worth sharing the experience.  YMMV, as they say.
>
>I just re-lighted what was to be my last image of the night, and now the
>last and second-last are attached for your consideration.
>
>I just changed the Z component without regard to the direction of the
>lights, so the cabinet is lit differently in each picture. I didn't mean for
>this to become a comparison, but, the lights in picture 8 are further away
>are at z*-300 and intensity of 1.0
>
>light_source { <  -30,  10, -300>  color rgb <1.0,1.0,1.0>    }
>light_source { <     0,   20, -300>  color rgb <1.0,1.0,1.0>    }
>
>while the lights in picture 7 are close to the chest at z*-30 and intensity
>2.0:
>light_source { <  -30,  10,   -30>     color rgb <2.0,2.0,2.0>   }
>light_source { <     0,   20,   -30>    color rgb <2.0,2.0,2.0>    }
>
>Does anyone typically use an intensity (light colour) greater than 1.0?  I
>just tried this to get more light into the picture. Both scenes are lit with
>the above lights and a sky sphere. This is getting better, although I do
>like the highlight on the front left leg from the close-in light.
>
>
>I have been tending to put lights reasonably close but quiet happy to move
>them to 500-1000 units away based on a 30x30x30 object (or a 3x3x3 as you
>suggested).  I'm wondering if the wood-textures I'm using are part of my
>issue. Usually I use {Green} when I'm prototyping or {Red & Blue & Yellow}
>and these colours tend to show up well.
>
>I don't intend to go so far as the photorealistic lighting i.e. falloff,
>etc, unless I have a specific project in mind, but thanks for pointing me in
>that direction for future reference.
>
>I didn't mean to turn this conversation into such a long one, but I do
>appreciate suggestions such as you have provided.
>
>best regards
>
>Stephen
>
>  
>
What diffuse value do you use? To low will darken your object, to high 
can wash out the colours.
I sometimes use large values for light(s) like 100+. In deffining the 
light, rgb 1 = rgb<1.0,1.0,1.0>.

Alain

Post a reply to this message