V-Ray Matte object with reflections (how to)

[Nomolas]

HI All

 

Here I precent a very simple scene with an overexposed image

Looks like this.

[ATTACH=CONFIG]40465[/ATTACH]

 

I have made my first HDRI test and want to learn the compositing of objects into a real photograf.

 

Here are my objects rendered out from the Cam-match without matte object.

[ATTACH=CONFIG]40469[/ATTACH]

 

 

so far so good.....

 

But here is the problem

 

Rendered matte with reflections see image below:

[ATTACH=CONFIG]40467[/ATTACH]

 

as you can see the table matte object that only is supposed to recieve shadows, reflections, refractions, caustics etc. from the objects, is messed up, because I can not exclude the reflections from the environment from the matte plane (table) - and ofcause I need the table to be precisely as in the image, with absolutely no lighting alterations made by the 3d software.

 

How the h... can I do that?

 

Or how do I set this up right, any help is very much appreciated

 

Here are some of my settings.

 

 

[ATTACH=CONFIG]40468[/ATTACH]

 

 

[ATTACH=CONFIG]40470[/ATTACH]

Matte object (V-Ray wrapper) with all the correct settings inc. base material

see the above images.

 

Base material with a little glossy reflection. The diffuse image is the first image you saw in this question applied as screen.

 

I see some discussion about render elements but I have tried them all, none of them helps me.

 

 

please please help.

 

Thanx a big lot

 

 

Sincerely

 

Nomolas

[VRayGuide]

Hi mate,

Did you set your VRay object properties the same way? ..-1

cos it looks like something blocking it for being transparent..

 

You can also use VRayWireCoor pass to fix this.. by selecting the table and removing the white, bright panel..

 

looks like you are using linear as color mapping that's why you get overexposed and high contrasted look..

You should probably try working with exponential..and put gamma 2.2 in the color mapping.

 

Or you can balance your linear color mapping with VRayPhysCam settings by lowering shutter speed...

 

so there is many different ways to resolve this, try to work it with VRay Object Properties and VRayMtlWapper ...

 

Regards

Alex