Chaos Corona Forum

Chaos Corona for Cinema 4D => [C4D] General Discussion => Topic started by: daniel_hp9 on 2018-10-27, 17:29:56

Title: lightbar effect
Post by: daniel_hp9 on 2018-10-27, 17:29:56

I tried to use LIGHT MARTIAL but the result is not the same, tried to play with glare and more options.
Maybe I'm not using the right technique...
https://imgur.com/a/eBuRG4u

reach the following effect:

https://imgur.com/a/qRFWZOB

help?

Full-speed non-debug version
Build timestamp: Oct 11 2018 10:40:02
Version: B2 rc 2 (core 3 (DailyBuild Oct 10 2018))
Cinema version: CINEMA 4D Studio R18.011 S
Plugin status: initialized successfully

Title: Re: lightbar effect
Post by: Ealexander on 2018-10-28, 17:37:48

What is the intensity level of your light material? A little bloom and glare can go a long way, but self illuminating materials default to an intensity of 1. Jump it up to 10 or 20 and then tweak the bloom and glare (though you might lose some color saturation).

Title: Re: lightbar effect
Post by: Beanzvision on 2018-10-29, 09:24:22

Here's a scene you can take a look at. As Ealexander mentioned, you could try cranking the intensity of the light material and also increasing the glare amount and lowering the threshold.
(https://forum.corona-renderer.com/index.php?action=dlattach;topic=22202.0;attach=92754;image)

Title: Re: lightbar effect
Post by: daniel_hp9 on 2018-10-30, 12:39:14

tanks! but the glare effect influence all objects in my scene... how I can exclude the other models from the "glare"?

Title: Re: lightbar effect
Post by: TomG on 2018-10-30, 13:49:25

Generally by controlling the Threshold for the Glare - since the other objects shouldn't be as bright as a light emitting source, raising the threshold should stop Bloom and Glare on other objects.

Title: Re: lightbar effect
Post by: daniel_hp9 on 2018-10-30, 16:59:47

Thank you very much for the tips!
I have another question why "metal" materials appear to be black in render

Title: Re: lightbar effect
Post by: TomG on 2018-10-30, 17:01:07

Depends on your scene set up - metals get their color solely from reflection, so they need something to reflect. Does your scene have something for the metal to reflect, either actual geometry, or a backplate or sky environment or similar?

EDIT - also, what do you mean by "metal" materials? A Corona Material set up to be metal? Or some non-Corona shader, and if so, which one and what are the settings for it?

Title: Re: lightbar effect
Post by: daniel_hp9 on 2018-10-30, 17:12:50

I Attached a file
As you can see there is an HDRI map but the model is black and not as silver as I would expect it to be
The material is actually downloaded from https://www.corona-materials.de/en/material-library/metal/scratch-metal/153

Title: Re: lightbar effect
Post by: Cinemike on 2018-10-30, 18:27:59

It is only black in viewport, not in the final render.
It's a limitation with 3rd party materials in the C4D viewport that not only Corona suffers from.
Use the Interactive Renderer to set up and tune materials.