thank you very much, i still need a lot of study for maxwell and 3d modelling. so another question is there any good free application like UVMapper?
or any plugin that have the same intention to uv mapping?

I think i have another problem with ies. So i copy the file IES Tester by Jason from another thread and i still dont understand how u/he can do that. my problem is when i making something from scratch and using ies with intensity set to 1 it looks very dim. but when i use FIRE in jason's file its quite bright with intensity just 1.
So i open jason's file, then making a new sketchup file, then copy all objects from jason's file to the new file. but when i use FIRE in my new file the ies is still very dim in ies intensity 1. i have to set around 100 to make it quite bright.

IES Tester.skp

IES Tester copy.skp

thank you very much jason that clarify everything i wanna know

Thank you for the reply, so ies is best off camera and we use standard emitters as camouflage for the lighting. 1 more question is it possible to use standard emitters (wihout ies) lighting bias to be like emitter with ies? e.g. i create a plane near wall but i want the lighting reflection at the wall be like ies lighting

Sorry for my english

I'm new in this forum and i'm using maxwell for quite some time, usually to render exteriors i would like to know more about the emitter.
I usually use standard emitter. Whats the difference in the luminance option? (Power, Lumen, etc)
I saw in this thread

http://www.maxwellrender.com/forum/viewtopic.php?p=353538#p353538

The image is awesome but i think he's only using standard emitter (not ies) especially for his "Corner Stone" emitter. Is it possible to achieve ies looking emitter with non-ies emitter to create a lighting bias?

And if i try to use ies emitter on a plane or sphere if somehow it will go black if im not facing from where the light from. but there still light its just the plane is going black like this