LED Screen

[LEWLEWLEW]

Hey all,

whats your best suggestion to render a big format LED screen, where you can still see the dots and the black space between?

I tried a light emitting plane behind a surface with thousand of holes, but thought the render time could be reduced with for example a RGB screen texture channeled on the light emitting plane. I havent found any Corona references though how that would work.

Thanks in advance!!

[TomG]

Sounds like the texture would be the way to go, as for any TV screen - create a plane, paint it with the Corona Light Material, and drop the texture in as input to that. You can then choose whether it emits light or not.

is an old two-part tutorial but still applies today too, for the most part.

[LEWLEWLEW]

Hey Tom,
thanks that makes sense.
And how would you achieve the LED appearance?

[romullus]

You can use Chaos scatter for that.

[TomG]

Lots of alternatives - you could just add that grid effect in Photoshop, and then that's what gets used as the texture in the Light Material.

[romullus]

I think mosaic filter would give you more life-like result than simple grid overlay, because individual pixel must be uniform in colour, but otherwise i fully agree with Tom, as with almost everything in CG there is more than one way to skin a cat.

[Beanzvision]

Might be useful, might be not, but a Corona/C4D user made something similar for a CRT screen. He talks a bit about it here. The end result was rather good.
https://www.corona-materials.de/en/material-library/special-effects/crt-screen/246

[LEWLEWLEW]

Amazing thanks everyone! ill give it a try :-)

[Aram Avetisyan]

The easiest thing will be to use the texture as is, then map a Gradient/Gradient Ramp with radial gradient, optionally with triplanar or real world scale to set the size for LEDs.