Vray material problems

[coolhand]

I have been stuck for days now. This is my first project with Vray and I can't seem to get even close to what I get with mentalray and arch-design materials. Here's a breakdown

 

Vray 2.0 3ds max 2012

90 percent of materials are from vraymaterials.de

Wood was done by me (results look great in mental ray with the same maps applied)

 

Color mapping: Exponential, Dark 1, Burn 1 ,Gamma 2.2 (max settings were adjusted to 2.2 as well)

 

Lighting with vray lights in the light fixtures. I had sun and sky but I took it out to reduce possibilities of culprits.

 

Physical camera: fstop 4 SS 100 ISO 100

 

I have searched and searched these forums can't find something similar and I cant get my materials to be vibrant and photo-realistic as you usually see with vray. I feel like im missing something basic, something Im possibly overlooking... The weird thing is, when I render with a standard vray material as the override it looks like a decent base. I bet its a check box im not selecting somewhere

Edited August 10, 2011 by coolhand

[Dave Buckley]

can we see the nice mr version?

[coolhand]

I didn't render this scene in mental ray, I was referring to a different scene. Sorry for the confusion

[AubreyM]

Since all of the materials are affected then it's not the materials but the render settings most likely.

Post a screenshot of your render settings and we may be able to spot something.

As a rule I won't use materials downloaded from vraymaterials without looking at them real careful first.

You do have GI on right?

[BrianKitts]

switch your color mapping from exponential to linear (1/1). With exponential you are clamping all of your illumination and flattening all of the contrast out of your scene. I personally can not think of any scene that should ever be rendered in exponential color mapping.

 

With linear color mapping you may have to tweak some of your lighting because with your current setup you won't know if any of them are blasting the scene. Once the lighting is set properly, you'll get a better read on your materials and will probably have better results.

[Jason Matthews]

switch your color mapping from exponential to linear (1/1). With exponential you are clamping all of your illumination and flattening all of the contrast out of your scene. I personally can not think of any scene that should ever be rendered in exponential color mapping.

 

With linear color mapping you may have to tweak some of your lighting because with your current setup you won't know if any of them are blasting the scene. Once the lighting is set properly, you'll get a better read on your materials and will probably have better results.

 

x2

[coolhand]

[ATTACH=CONFIG]44244[/ATTACH][ATTACH=CONFIG]44245[/ATTACH][ATTACH=CONFIG]44246[/ATTACH]Alright gents, suggestions taken:

 

Switched to linear 1:1:1

Uploaded rendersettings

Took out all interior lights re-added sun + sky with portals outside of windows (no glass in between outside and interior)

 

Screenshots attached.

[Dave Buckley]

I wouldn't use plane lights as portals, they work fine without that checkbox. Your render settings seem quite low which isn't helping. Why have you got Optimized Atmospheric Evaluation checked?

 

Any chance you can post the scene? Could be the material settings?

[coolhand]

Thanks for the reply's

 

I unchecked the skyportal check box and attached are my material settings. I don't think I will be able to upload the scene (my apologies in advance). [ATTACH=CONFIG]44247[/ATTACH][ATTACH=CONFIG]44248[/ATTACH][ATTACH=CONFIG]44249[/ATTACH]

[coolhand]

I figured it out... For those who are interested, I did not export the scene correctly from sketchup, therefore materials and light were calculations were incorrect. Export your scene from sketch up as a 3ds max file.

[erkutacar]

plus i think u should unlock fresnel in ur materials.. not everything has the same reflections and refractions.. set the glossiness and ior values properly for each material..