Need help with V-ray settings.

[Ba5tarD]

Hi there, first: I know nothing about 3D modeling, and never worked with it. Second: right know I have Rhino + V-ray and some technical models that I need to render. After some playing with the settings I got this:

 

It must look like Stainless Steel. I sent it to the client, and received answer that I'll quote here:

 

The colour is fine, but there is one very small detail: Would it be possible to see a sample with the lower half of the fitting reflecting the light in the very same way as the top half. The top half is very realistic. We presume this is just a small adjustment to the light direction.

Sorry, but this is just too tough for me - don't know how to do it, so I'll appreciate any help from you guys. If needed, I can post screenshot of my settings.

 

P.S. I'm sorry for my bad english.

[amer abidi]

Your model is reflecting the sky/environment, which seems to be set to a vray sky or so. all you need to do is replace the environment map (in the v-ray:environment rollout - reflection/refraction environment override) with another map you want reflected. An example would be a blue-white-blue gradient ramp which would give you blue on both top/bottom, and still retain a bit of white variance in the middle of your model.

 

Alternatively, you can uncheck "trace reflections" in your material rollout and change the colour multiplier to that which gives you your desirable effect.

 

I tried to be as "user friendly" as possible since you dont have much 3D knowledge, so let me know if i failed miserably

[Ba5tarD]

Thanks for your help, amer abidi! I'm trying, and got right now some strange results, but I'll keep playing with settings...

 

Thank you!

[Ba5tarD]

Sadly, using this bump maps, I can't get nothing like my previous image. Maybe you or somebody else have another solution or advice. Thank you anyway.

[Brian Smith]

why not just move the camera upwards so that its pointed down more and reflecting more of the sky instead of the area below the horizon

[Ba5tarD]

why not just move the camera upwards so that its pointed down more and reflecting more of the sky instead of the area below the horizon

 

I did render from the top view and received same image with blue reflection in the center, but this is not what I need. ( This is what you mean?

[Brian Smith]

well i interpreted your client's comment to say he only wants the blue to reflect...not the gray...regardless, it should just be a matter of changing the camera position...or changing the environment reflection channel

[Ba5tarD]

Your model is reflecting the sky/environment, which seems to be set to a vray sky or so. all you need to do is replace the environment map (in the v-ray:environment rollout - reflection/refraction environment override) with another map you want reflected. An example would be a blue-white-blue gradient ramp which would give you blue on both top/bottom, and still retain a bit of white variance in the middle of your model.

 

Alternatively, you can uncheck "trace reflections" in your material rollout and change the colour multiplier to that which gives you your desirable effect.

 

I tried to be as "user friendly" as possible since you dont have much 3D knowledge, so let me know if i failed miserably

 

One more thing - in final render I got reflections like the client wants, but it doesn't look so good like render that I posted here. ( Maybe somebody had similar work, and can share his v-ray's settings with me....just wondering.

[Ba5tarD]

well i interpreted your client's comment to say he only wants the blue to reflect...not the gray...regardless, it should just be a matter of changing the camera position...or changing the environment reflection channel

 

Yep, he wants the lower side reflection to be the as the upper. Can you give me more detailed description of what I need to do?. As I say, I never worked with 3D, so I got no theory at all. ( Thanx, anyway. )

[BrianKitts]

Basically the client wants the sky reflection on both the top and the bottom of the object, which is exactly what Brian Smith's solution of moving the camera would give you. Except then you would lose the ground plane reflection in the middle.....

 

So you may want to try a reflelection override as mentioned with something that looks like the attached gradient..... faking a thin ground plane tapering off to blue in both directions...

 

NOTE: with this method, if you are using a vray physical camera you will either need to turn off the "affect background" option in the color mapping or increase the output of the gradient ramp.

Edited November 11, 2008 by BrianKitts

[Ba5tarD]

Basically the client wants the sky reflection on both the top and the bottom of the object, which is exactly what Brian Smith's solution of moving the camera would give you. Except then you would lose the ground plane reflection in the middle.....

 

So you may want to try a reflelection override as mentioned with something that looks like the attached gradient..... faking a thing ground plane tapering off to blue in both directions...

 

NOTE: with this method, if you are using a vray physical camera you will either need to turn off the "affect background" option in the color mapping or increase the output of the gradient ramp.

 

OK, Your image is very helpful. As I understand, you took hex colors for your gradient using my render. Thank you very much, I'll try this tomorrow at the work.