Some problems with a quick interior test

[daniel_zevahc]

I was trying to do some test with interiors and i made this scene.

If you can see, there are some black artifacs around the two reflecting balls, could this be an AA setting? settings in this image are Adaptive -1 2, rand and normals on. I also tried 0 3 settings with the same result. Also the thin rope in the window looks jadded.

And another problem, this current render is made with irradiance map, i was also trying to render the scene with Photons and the render turned to be an all black image, all the materials are vraymat. I have made some renders with photons in the past with no problem, but i just dont know why in this case all is black.

What could be the problems, thanks in advance.

[Nenad]

Actually, photon maps should be used only on secondary bounces. The photon map option for the first bounce is only intended for testing purpose. As far as I know, Vray does either direct computaion, photon maps, or light maps for secondary bounces, not irradiance maps.

I believe you already knew this since you said you've already used photons without problems in the past, just though I'd clears things up a bit.

Concerning the jagged rope, maybe higher min rate on AA will resolve that.

Have no idea for the sphere issue. Looks really strange...

Regards,

Nenad

[dusan]

If you are reffering to the noisy shadows, this has more to do with the vraylight subdivison than with AA settings, though increasing them will significantly incriease the rendering times.
If you reffered to the darker shadow between the two spheres its the way it should be, you could probably get rid of it by increasing the secondary boundce multiplier.

[yage]

well, i also would refer to the aa-settings. or a wrong reflection. do you use a falloff map for reflections? or fresnel? or even raytracematerials (uuh)

[J_Bug]

I think you're correct yage. Looks like Raytrace material/ map to me.

--Jon

[daniel_zevahc]

Well, yep, the material was the problem, i just made a new vraymat, added reflections, gave the sphere some more segments and it looks a lot better now, now my question is, the only difference betwen the two materials is that the old one with the problem has an IOR 0.18 and the new one is at 1.6, could that be the problem?.

Still havent found why doesnt work with photons

Thanks guys.

[yage]

well, of course! an ior of .18 is MUCH too low (for anything of materials). when light passes through a surface, the light is typically bent or distorted. your 0.18 ior distortions it much too heavily. only silver has an ior below 1, but as you can see - that doesn't work well use something about 1,4.

[mukks]

dont any one feel that red color bleed is high,,,

[daniel_zevahc]

yep, that was my intention , I wanted to do i bit red colored room, well, next time I'll tone it down a bit, so the bleeding doesnt looks this saturaded.

But, look at this, it looks great! , now it's time to do some more seriously interiors.

[gogator100]

Nice ball ~

Hey i would like to ask about reducing color bleeding , Do you know how to do that? I know some tips to reduce it like controling diffuse color, Can you tell about , if you know any other method ?

thanks and regard

Lee

[daniel_zevahc]

Nice ball ~

Hey i would like to ask about reducing color bleeding , Do you know how to do that? I know some tips to reduce it like controling diffuse color, Can you tell about , if you know any other method ?

thanks and regard

Lee

Well, the way that i would do it is to put a red less saturated on the objects, calcule the irradiance map, save the IR, load it, put the RED color that i want and then make the render.

I have read in some posts that in the new beta there are some values that control the bleeding or something like that, but i still havent tried.

[gogator100]

Thanks daniel_zevahc

[jawee]

can you share your material on the two spheres?

[daniel_zevahc]

Sure!!!

[yage]

surprisingly that 3subdivs. are enough for that quality.
but thanks