Remissive material is not intended for main light source - merely for the effect.
V-Ray doesn't process emmissive materials in the same manner as lights.[/quote]

Ok!!
So, if I need to create a lamp to put on to a hanging or other lights, should I make a small cube using the vray rectangular light sides?!
Thanks!

this are the pics

Does anybody know why the light of an emissive material appears grainy in space while the light from the vray rectangular light does not?!
As the photos show, I have created a cube using vray rectangular light with a multiplier of 100, while the sphere is a sketchup drawn sphere, the material of which is an emissive material of an intensity of 50000. The light is grainier when the emissive material is used. Is that how it always is, or can I improve the light quality that is being displayed by the emissive material?!
Thanks!

@thomthom said:

Not the most recent one. Question is - is it the very first one?
If the About section in the Options window - do you see a version number?
If not - then you have the first one - and with that one you have to use a multiplier of maybe 20000-50000 when you use the Physical Camera.

thank you a lot
it works now I am so happy, I can finally render my rooms and sub the presentation to my tutor...
thanks a lot guys!!

I am not so sure about what version it is!!I have included an image of it.
thanks

Hi everyone!
I wanted to ask for a proper step by step guide into how we can create an emissive object?!
I have been trying all day long to apply the simple emissive material I have created to the surface of some various lamps to light them up!
But unfortunately unsuccessful, as each time the material rendered is almost black, and the more I increase the intensity of it the darker it goes along with it’s surrounding. I am so confused and tired now that I have given up!!
Help please...