ok found it and i think i am getting somewhere, emmiter_3 works but sends light up while emmiter_4 is the same eith the manual. i think i have to make some more tests. thanks a lot for your help..

i don't know what the emmiter is. first time to hear it. if you can explain where to find i can for sure sent it to you. i could only find this in properties(image 1)

thanks a lot for your patience
Dimitris

well this is an old 3d project i just used to see how octane works. i have made it with vray materials. i wiil attach the material so you can have a look (vismat format). i have also made some tests on simple forms without materials and does not work either.

well here are some printscreens. in the 1 there are no lighs only the hdri. in 2 there are lights in the black cyrcles but they do not appear in render. i use demo version, is it the reason it does not work?

hello everybody,
new in octane and i am trying to set a scene with a nigth sky (hdri) but alla the lights of the scene do not appear at all. any ideas? is it a setting i am missing here???

Thanks in advance