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**Micha_cg** · 12-09-2006, 05:30 AM

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Great, this is a realy good start. Gratulation.

Could you tell a little bit, how you have got the nice reflection of the stones.

**abhikaam** · 12-09-2006, 06:43 AM

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cool stuff. Looks pretty expensive, as like my wife would like it

only your modell seems to be a bit above the ground.

**Travis Serio_cg** · 12-09-2006, 07:27 AM

V-Ray Jewelry

Originally posted by Micha

Great, this is a realy good start. Gratulation.

Could you tell a little bit, how you have got the nice reflection of the stones.

the reflections are coming from a really colorful hdr map that is mostly black with a stained glass window far in the back ground. I would really love to see env's on a per object level. It took many white cards, funny ground plane rotation angles and lots of area lights to keep the colors out of the ring bezels.

I also had to drop the reflection amount down to about .75 on the glass material to give it more of a glossy reflection. IOR is slightly higher than a typical diamonds IOR, when set to exactly 2.417 the inner facetting was refracting too much black from the environment. I think i ended up somewhere in the 2.5 range (id have to look at the file at home).

yeah its floating like .1 mm.... it happend moving the ground plane ring around towards the stained glass... i noticed it too about 45 minutes into the render... lol i cant win.

**Travis Serio_cg** · 12-09-2006, 07:49 AM

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Here is the HDR map that i used.

Here was the initial diamond tweaking process starting from Micha's material editor tutorial scene setup. Thanks again for the work on that, it saved me a lot of frustration by being able to see your sample materials and how they were configured. I will say I am still confused on some of the settings such as the difference between mapping reflection bmp's and filter bmp's and so on.

My diamond material still needs lots of work. I just dont get the sense of volume from it like i think it should have.

**Micha_cg** · 12-09-2006, 10:07 AM

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Your backround/ground is looking splotchy, I recommend to use a preblured version of your HDRI for the GI environment. Your HDRI is not easy to calculate for the GI engine. My starterkit based on this preblured HDRI method.

**Travis Serio_cg** · 12-09-2006, 11:05 AM

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actually the GI hdr is blurred to a factor of 20 i think. the splotchyness is coming from a blue spot light that's shooting on that wall from under the ground planes end like " ________ | " with the spot shooting up through the gap onto the back ground wall. I wanted to drive the samples and subdivisions higher but the render time would have been insane with the number of light sources. my main focus was really on the diamonds. but i totally agree and saw it as well.

**Micha_cg** · 12-09-2006, 11:36 AM

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Are you shure the spot light is the reason? The splotches are looking colored like the colors of the HDRI. A HDRI with bright colored spots is a problem most.

I have done a quick test - HDRI with filter blur of Vray and a preblured HDRI per HDRShop -> the preblured HDRI produce much smoother LC GI.

**Travis Serio_cg** · 12-09-2006, 11:53 AM

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Originally posted by Micha

Are you shure the spot light is the reason? .

lol not really, but that's when it all started. Ill give it a shot when i get home.

**Micha_cg** · 13-09-2006, 01:26 PM

V-Ray Jewelry

Originally posted by Travis Serio

... I will say I am still confused on some of the settings such as the difference between mapping reflection bmp's and filter bmp's and so on....

I have update the Material tutorial with a small example for that.

**Travis Serio_cg** · 13-09-2006, 03:13 PM

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Thanks (that was quick lol). To me what is odd is the ability to say Reflection Map - select an HDRI and set it to Environment. Now, in most other nice render engines this would tell me the user that this map will be basis of all reflections as though this object was in this environment. But when i set it up like that, i get some really random result. More like the Map is a filter of some sort blanketing the object.

**joe_b** · 14-09-2006, 06:45 AM

V-Ray Jewelry

The reflection map in V-Ray is used to determine the "crispness" of the reflection. Not so much an image of what is reflected. The filter map would be used for the latter. Also you want a reflection/refraction background you need to set it to the "Background" map in our Environment tab - I'm not sure if thats why your not getting the results you expect?

**merlik585** · 14-09-2006, 09:54 AM

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Is there a way to orinet the background like in Flamingo.It is much easier.

Thanks

Renee

**Matt_cg** · 14-09-2006, 02:08 PM

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Originally posted by RVallieres

Is there a way to orinet the background like in Flamingo.It is much easier.

Thanks

Renee

Ditto. I would really like to know the same.

**joe_b** · 15-09-2006, 06:49 AM

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I'm not really up to speed on Flamingo but I can check out how they handle environments. Thanks for the idea.

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