2.3 lighting need help

Mon Aug 16, 2010 10:24 am

Here is one scene I just made for lighting test. This raise some questions. please anyone knows about those issues help me.

1. How to make emitter more bright. I'm already know lower fstop or increase my ISO but in my scene light is not strong enough. So what is the solution for made this light more bright?
2. Seam like my emitter not had any reflection on glossy floor. How to make this happen?
3. Even though I raise emitter power all the way, those light can not getting through specular material. Is there still not activate light through specular material or only bugs in 2.3?

Thank you.

Mon Aug 16, 2010 11:19 am

I am wondering if you are using the Pathtracing kernel or Directlighting, I have not tested this myself but this looks to be your issue. You should be using Pathtracing.

Mon Aug 16, 2010 12:44 pm

I was use pathtracing. Those cubes are modeled around 100 square mm each and emitter's power all max.

Mon Aug 16, 2010 2:40 pm

I had to reverse / flip the normal to the light source,in the modeling software

Tue Aug 17, 2010 1:42 am

Henrik wrote:I had to reverse / flip the normal to the light source,in the modeling software

I'm not quite sure what you suggest. I just make normal map for each emitter in diffuse and change its properties in Octane. I modeled this scene in Sketchup.

Please anyone had the same problem give your suggestion.

YouTube · Tue Aug 17, 2010 2:22 am

Henrik wrote:I had to reverse / flip the normal to the light source,in the modeling software

Normals are rays going out/in of the model, they simply represent the direction of the polygon. So what he is saying (am not sure if this will solve the problem though) is to go to your modeling software and flip the normals direction. In Max you select the model and right click and from the menu somewhere you will find "Flip Normals", just click this and re-export and import the model in Octane again.

Tue Aug 17, 2010 4:23 am

hmk wrote:
Henrik wrote:I had to reverse / flip the normal to the light source,in the modeling software
Normals are rays going out/in of the model, they simply represent the direction of the polygon. So what he is saying (am not sure if this will solve the problem though) is to go to your modeling software and flip the normals direction. In Max you select the model and right click and from the menu somewhere you will find "Flip Normals", just click this and re-export and import the model in Octane again.

yes, that's what I meant, the only way I got the source (Black Body) to shine was to reverse the normal.
Hope you reply if you make it this way

Tue Aug 17, 2010 10:20 am

oh.

This model was made with right front side for emitter.

I think my problem same rman thread. There is no/ or very low reflection of emitter from glossy materials (?). Or some setting not right with both emitter and glossy floor. Or there is no calculation for those reflections.

Code: Select all

http://www.refractivesoftware.com/forum/viewtopic.php?f=33&t=3202

Strange that not any words from develop team.

YouTube · Tue Aug 17, 2010 10:20 am

The problem is reported here too http://www.refractivesoftware.com/forum ... =33&t=3203

YouTube · Tue Aug 17, 2010 10:22 am

9fly wrote:oh. This model was made with right front side for emitter. I think my problem same rman thread. There is no/ or very low reflection of emitter from glossy materials (?). Or some setting not right with both emitter and glossy floor. Or there is no calculation for those reflections.Code:http://www.refractivesoftware.com/forum/viewtopic.php?f=33&t=3202

We posted in the same time