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Strange anomaly with "convert to area light"

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Hi all,

I have been banging my head on my desk all day with this issue. I am trying to create backlit lettering with a nice glow. I have the objects (text converted to poylines and extruded) and I have a duplicate set of extruded lettering which I converted to "Area Light", The idea is the light source sits behind the solid lettering and in theory, I should get a glow around the perimeter of the solid lighting (light source is a few mm back). What I am actually getting is something that resembles Christmas lights. As nice as this is, this isn't what I want. (See attached pic!)

Link to VWX file (2016).

Project.VWX (Google Drive)

I appreciate your help.

Thanks

Duncan

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I think you'll want to use a Glow Texture, and not an Area Light. Assign the Glow Texture to the back face of the extruded letters, increase the quality of Indirect Lighting, and you should get rid of the 'Christmas lights'.

Take a look at this thread: Back Lit Lettering?

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Hi Tim,

Thanks for the suggestion about the Glow Texture. I found that post earlier in the day and tried to get that to behave but had no luck whatsoever. I created a glow texture and applied it to the rear face of the extruded letter and left a 3mm gap between the letter and a solid white surtface and got zilch when I rendered it. I have also played around with all of the glow "brightness" settings, ambient light levels, etc and have hit a dead end.

I shall carry on playing until I get something to work.

Thanks

Duncan

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Perseverance pays off and all that. The solution is definitely to use the "glow" texture. Turns out I didn't have the Glow brightness up enough!

Cheers all!

Dunc

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As just being said,

I would also use a self illuminating material. That Requires indirect light

calculation ON.

And depending on scene and what it is used for, I had set illumination

from 120% up until 8000%

But your example image looks much cooler !!!

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