Help, Examples of Diamonds and Gems, Lighting

Help, Examples of Diamonds and Gems, Lighting

Hi all,

Sorry i've been away working madly.

I'm hoping someone can post some links to Diamonds. I want to create photorealitic looking rings. I'm most interested the lighting aspects used for them. I found a few things thru search but no complete examples of what I'm looking for.

Download examples or tests would be fantastic for learning.

In a rl store it seems diamonds get there sparkle from multiple light sources. I'm guessing that may be the case here too. A lot of examples I've seen look a little murky, I'm looking for something really bright and sparkly, but not blown out.

Any help as always is Way appreciated.
Thanks

You might do a search on photo lighting for advertising and products. Use real world lighting techniques for photography.

I think I didn't explain that quite right.

I'm Not looking for Real world photography examples. I'm looking for examples in Cheetah 3D. Render tests. . jas files I can learn from.

I have the script from the forum for creating the dimaond models, which is really nice. But lighting them in Cheetah is what I'm looking for.

akadigital said:

I think I didn't explain that quite right.

I'm Not looking for Real world photography examples. I'm looking for examples in Cheetah 3D. Render tests. . jas files I can learn from.

I have the script from the forum for creating the dimaond models, which is really nice. But lighting them in Cheetah is what I'm looking for.

Click to expand...

This is for Max but the same techniques apply. Hope it helps you on the path.
http://www.tutorialized.com/view/tutorial/3ds-MAX-Tutorial-Advance-Illumination/26644

Also:

Hi,

I tested some lighting. I hope it would help.

2 area lights (both no photon, one from top and another from front ), 1 pure photon light (spot type, from front), 1 pin spot light (with photon, for diamond), and solid color plane on left side.



only 1 pin spot light ( with photon ) and solid color plane.



only top area light ( no photon ) and solid color plane. without caustics, diamond become dark than expected.



for sparkles, it needs caustics and dispersion effect ( I think ). currently Cheetah3D doesn't support dispersion.

please check attached scene file. it requires Brilliant Cut.js script.

regards.

tg_jp, Hiroto.

thanks to you both for your replies, I'm going to work on it and post any findings. This is great.

Here's a couple...

I put lights inside the diamond, plus used a ball object surrounding the diamond. The ball is turned off on the black version...

Not quite a sparkle but getting there...

Do you need a script to see the diamond? I downloaded the .jas but couldn't see it?

Yes..... I should have posted tg_jp's Script download...

http://www.tres-graficos.jp/blog/files/article.php?id=3

Really cool script tg_jp !!!


I believe it goes in the Polygonobj folder in the scripts folder...

here's a go