Photometric scale for VrayLightMaterial

V-Ray V-Ray for 3ds Max Requests
1

I am quite new to the forum but from the recent projects at Airbus I found that it would be great to have photometric units for the VrayLightMaterial as they already exist for the Max IES lights, the VRayLight and the Sun/Sky-System.
So I could have an arbritrary geometry of a light source and define values like candela, lumens, lux etc. I have the feeling that render times are lot faster with the lightmaterial compared to the VrayLight and it is easier to setup. In our cabins we typically have a lot of lights (sidewalls, bins, readinglights etc.).

Would like to hear of your thoughts about this.

Cheers

Robert

2

This is somewhat tricky, but it has been requested before and we will definitely think about it. For now, there is a formula for calculating the intensity given a light power and the surface are of the object.

Best regards,
Vlado

3

Thanks Vlado,

we have maxscripted the workaround now to calculate the formula based on the meshes surface. But we are looking forward to the implementation of it :slight_smile:

Rob

4

hi vlado
can you post this formula or link!
cheers

5

Hi,

As the ‘physical’ approach to lighting becomes a more and
more important part of 3D (esp Arch viz) features such as
this will become invaluable tools to work with. (IMHO) :slight_smile:

Regards
Bri

6

You can find the formula in this thread: http://www.chaosgroup.com/forums/vbulletin/showthread.php?t=34536&highlight=area+lumens

Best regards,
Vlado