Rendering problem

[dimaknight]

funny enough I did that, instead of 8 subdivisions in the vray light, I bumped it up to 25 and now the light on the material is perfect but that shadow on the ground is still too noisy.

[XSImatrix]

taken from Aversis,

10. Reduce the noise

We will now try to reduce the noise for both image samplers to see which one is the fastest for high quality images.

Set image sampler to adaptive subdivision AA, min/max=0/2
Adjust subdivs for both lights to 30 and render.
The image is noise free. If you zoom in a lot, you can see a tiny bit of the blotchiness.

Now change to adaptive QMC AA, min/max=1/4
Adjust lights subdivs to 36.
In the QMC sampler rollout, change the noise threshold to 0.002. The adpative QMC AA is very sensitive to the QMC sampler settings. The noise threshold is the most important one. (QMC sampler controls the quality of all 'quasi monte carlo' related calculations. In short, all subdivs settings are qmc related, except for lightcache subdivs)
If you zoom in here, you can also see a bit of noise, but sharper and smoother than the blotchiness of adapt subdiv AA.

But in this case, adaptive subdiv AA wins from adapt QMC AA. When you will add more complex materials like glossy ones, and more area lights, fine textures, displacement maps etc, rendertimes for adaptive QMC will not rise as fast as rendertimes with adaptive subdiv AA. Usually when you have lots of glossy effects (also DOF, motion blur,...) it is better to use adaptive QMC AA.

Aversis Vray 3D Tutorials (3D Studio Max) - standard studio lighting setup | 3D, rendering, animation, textures, backgrounds, hdr images, models, art, graphics

[dimaknight]

Thanks a million, I'll give it a shot tonight.

One question though, for you car paints, how much do you is a good number to use for the subdivision in the reflecyion and refraction.

I'm using:
reflection 35
refraction 15

[XSImatrix]

You wont need more than 20 in the reflection, and I would keep it the same for the reflection.

[dimaknight]

ok, now I've mess up things real good, for the past two days i've been playing around with the materiala nd vray setting and now I've have no clue how to fix this.

I've got a thin rectangle vray light above the car to give the impression that theres a tube light ove head. and for the live of me it will not show up. any ideas on how I can fix this.

[P A L A T]

Do you mean it does not show up in the scene or in the reflections?
It might be that you must enable "affect Specular" in the VRay light settings. Or the "Invisible" box may have to be disabled.

[dimaknight]

I'd have to check that later today, but to answer your question I seelight on the hood but it's more like a fuzy broad band, like they are highlights, not a solid thin band.

[dimaknight]

Well, I've upgraded my max to version 9 and vray 1.5. and I've notice a few more things that you are able to change in order for the user to get their end reason perfect.

and with new programs I seem to be left in the dark on where I can fix my problem.

As you can see in the images that I've attached, there are black splotches under the boady of the car around where the shadow is. any idea what I need to change in order to fix this?

[staticrain03]

loooks pretty good man keep it up

[dimaknight]

Thanks, as soon as I get past this little problem I can finish the still shots and get started on my little animation.

does anybody know how to fix this. has it something to do witht the lighting settings or the rendering settings