render setup - white background?

V-Ray V-Ray Common Tutorials, Tips & Tricks
1

Hi

I’m trying to find a solution to render some concepts over a white background.
I’ve been using
Primary:Ir map Secondary: L C.
Image Sampler: fixed
Filter: Catmull-Rom

Camera settings:
F-Numbers: 1
Shutter Speed: 200 to 350
ISO:100

the results are terrible

can anyone give me some hints, please?

test file:

http://tavaresdacruz.com/vray/A\_01\_w.zip

http://tavaresdacruz.com/vray/01.jpg

http://tavaresdacruz.com/vray/02.jpg

Best regards
Tavares

2

Could you pop up some images showing what’s terrible? Ideally turn on some render elements (vraylighting, vrayglobalillumination, vrayreflection,vrayspecular) so we can chase down the problem!

3

Thanks joconnell

I added 2 images on 1st post.

4

Is it the graininess you’re seeing being the problem? where is the main light in the scene coming from? A dome light?

5

i made several tests

dome
planes
and finnaly no light at all

i need to get several infographic bases, as clean as possible, white background, and “white or light grey models”, This is the major problem.

When i use some materials, based on bitmaps i can get acceptable results over white background, as you can see on link below

“white or light grey models”…i’m so far to get it…and i need it badly.

6

Simple - any of your reflective materials have the default amount of reflection samples, 8 won’t be enough.

For your floor material (material 7) I’ve upped the reflection samples to 32 and for the glass material for the office with the three seats (material 21) I’ve upped the reflection samples to 32 and the refraction samples to 64.

samples_tweaked.jpg
samples_tweaked.jpg640×480 46.5 KB

7

Thanks a lot joconnell

i will try it right now

8

Perfect

Thanks a lot joconnell

9

Disable vignetting in your vraycamera and do it in post if you need it.