# IES Lighting on Transparent Alpha Background

I've been looking for this question and answer but have only come across a similar one in regards to shadow, I was unable to find an answer.

I'm creating assets for a project and am using IES lighting for certain light models (These are built into the models as flat planes, if you can imagine transparent textures around the edges of the model with "Bloom" effects)

I use a generator to create different styles of IES and can import them into Blender as lights, but the problem is capturing the lighting itself with a completely transparent background, so the image can be used as an "Overlay" on textures, such as Brick, Stucco, Wood etc.

I was thinking I could have the light casting the effect on a wall, somehow change the wall and background to be transparent and be exportable with an transparent/alpha layer.

Any ideas on how to do this?

• @EHM Yes, by rendering the image (F12). Note that you'll have to position the camera in order to render from the point of view you want. Ctrl Alt Numpad 0 will snap the camera to the current viewpoint. For this particular case you might want to use an orthographic camera. – gandalf3 Jun 23 '15 at 17:37