OTOY Forums

Hi, was just wondering where I could connect ies info. Do I use black body for emission type? and where do I connect it? The choices are efficiency or texture. The same choices for texture emission. On the drop down lists for either none seem to be ies related. For black body, there is the entry for temperature, I know I would like in this case to use halogen lights and their temperature is 3200k but that wouldn't give the shape of light which I think is contained in the ies files.

The online manual has some nice info about the usage of mesh emitters, it can be found here:

http://render.otoy.com/manuals/Standalone/?page_id=390

or here:

http://render.otoy.com/manuals/Poser/?page_id=104

Personally, I too, use the "Distribution" slot for IES maps, as it's suggested in the manual.

billyjoe2014 wrote:Hi, was just wondering where I could connect ies info. Do I use black body for emission type? and where do I connect it? The choices are efficiency or texture. The same choices for texture emission. On the drop down lists for either none seem to be ies related. For black body, there is the entry for temperature, I know I would like in this case to use halogen lights and their temperature is 3200k but that wouldn't give the shape of light which I think is contained in the ies files.

I always use the distribution node for IES files. That makes sense since the IES files define the range and fall off of the light. Make sure that you have set the position type to Normal Space (in the projection mode of the distribution map).
If you do this, the light faces into the direction of the normals making it easier to direct or point the light

Thanks very much for your help, its much appreciated.