Lamborghini Gallardo

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doublez
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Lamborghini Gallardo

Post by doublez » Mon Jan 28, 2008 2:49 pm

I'm getting close to done with my latest project, but having a hard time with the lighting, again.

I want a studio setup that fades to black like this...

http://i125.photobucket.com/albums/p50/ ... 478585.png

...with out the specular highlight that's on the window (I forgot to make the window a difuse) or like this...

http://i125.photobucket.com/albums/p50/ ... 775476.png
(it's dark, but you get the idea)

So how can I do this?

Can you do you it by making a fabric sheet to put above the car with a mesh emmiter above that? Or is there a different way to do it?

Thanks,

(The spheres are for relection)

StompinTom
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Post by StompinTom » Mon Jan 28, 2008 4:26 pm

specular highlights = reflections of bright things, be it light sources or highly illuminated objects.
so, in the first one, you could position your light more above the car or at some other angle so that its reflection doesnt appear in the window. you can use a black plane or box around the light to control how far it illuminates (basically a gobo).
as with many things, start real simple with your light setup and keep adding where you need it. makes it much easier to control the light and figure out what you need to change.

doublez
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Post by doublez » Tue Jan 29, 2008 1:53 pm

I tried using a black plane and a black box, but I either had no light at all or a big light ring with a square cut out in the middle (http://i125.photobucket.com/albums/p50/ ... 569850.png).

Here's the best I've got so far which isn't great. It's just a plane about the size of the car, above the car. But there has to be that one squareish reflection. I've been doing some research of how pros light cars in a studio but haven't found much useful info.

http://i125.photobucket.com/albums/p50/ ... 570384.png

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Kram1032
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Post by Kram1032 » Wed Jan 30, 2008 2:54 am

I think, he actually meant to limit the beam of the lamp with that black stuff ;)
a cube with one side - the one, that faces the car - open in diffuse black. So, you'll limit the beam, which will cut off the light. (though, not in the middle)

doublez
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Post by doublez » Wed Jan 30, 2008 9:02 am

That would make more sense. I'll try that.

doublez
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Post by doublez » Thu Jan 31, 2008 10:59 am

Well I tried the black bck, but didn't get rid of the specular, but I did try moving the emiting plane and got better results. It's just a bunch of trial and error I guess.

crojack
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Post by crojack » Thu Jan 31, 2008 11:26 am

What if you bounce the light off of a wall. That would make the lighting more diffuse I think. Isn't that what professional photographers do?

StompinTom
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Post by StompinTom » Fri Feb 01, 2008 3:21 am

Kram1032 yeah thats what i meant.
crojack same thing as an area light. light is light, reflected light is the same as emitted light for all intents and purposes.

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Kram1032
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Post by Kram1032 » Fri Feb 01, 2008 3:25 am

crojack:
Yeah, they use white umbrellas :)
And you can control the diffuseness by using a phong instead :) (with different exponent)

doublez
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Post by doublez » Sat Feb 02, 2008 4:39 am

I decided to go with a background instead of just a ground plane and now it looks better, but the light I used for this render doesn't look good.

http://i125.photobucket.com/albums/p50/ ... 846047.png

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Zom-B
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Post by Zom-B » Sat Feb 02, 2008 4:46 am

doublez wrote:...but the light I used for this render doesn't look good.
If a basic studio light setup does the pain for ya, maybe this site helps => www.digitalin.fr

There you'll find some studio light setups as env_maps, maybe there is one that pleases you :)
polygonmanufaktur.de

doublez
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Post by doublez » Sat Feb 02, 2008 8:18 am

Thanks for the link, but I don't want to use one of those, I'd like to come up with something myself. It's good to learn. With the same light, but different background I get way different results, so I just need to do a lot of testing. I'm in no hurry.

doublez
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Post by doublez » Mon Feb 04, 2008 3:56 am

After some thinking I decided studio setups are boring and I need to set up a real scene for this car. So I'm going to do an outdoor scene, with no emiters, just a sun :D

doublez
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Post by doublez » Tue Feb 05, 2008 11:01 am

Here's what I came up with so far for a scene.

Image

I don't know why the beams look 2D they should be just as tall as they are wide. I'm going model some doors and windows and I also want to have plants, but I don't know if I should model them or use pictures.

Is it hard to model plants, I've never tried?
What would look best, pictures or models?

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Kram1032
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Post by Kram1032 » Tue Feb 05, 2008 11:14 am

usually, organic modelling is harder than architectural...

from easiest to hardest (I guess)
crappy archiviz
crappy organics
reasonable archiviz
reasonable organics
good archiviz
great archiviz
good organics
great organics
realistic archiviz
and on the same place:
realistic organics / realistic archiviz, which partly makes use of organic elements.

Same is for light and such... - interestingly, the light seems to be simpler to set up, when your scene is very very complex, with lots of tiny details...
pictures are ok, but modelling is far better. especially, as pictures tend to look flat (d'oh). But it's also very hard to get a working leaf-material. You can try dr Bouvier Leduc's material, if you want to archive high realism...

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