How to make a Spotlight or Volumetric light ?

[Bolos]

I'd like to make some car lights, but I'm unable to make a spotlight with Octane.

I've got Octane 1.52.1 with C4D R15 Studio.

Can you guys help me ?

Thanks!

[Bolos]

I want to achieve this with directlighting, is this possible ?

[bepeg4d]

yes, first use an ies file in the distribution channel of a blackbody emission node; there is a very good ies library here in the forum, just search for "vinz ies" and you should find it easily
than you need a cube with a special specular material to generate the fog/volumetric effect.
there are some simple scene about the fog effect in ahmet examples
ciao beppe

[Bolos]

Got it to work!

Thank you Beppe!

[ten]

How do you setup the specular material please? Or could you point me towards the example scenes?

thanks

EDIT: its ok, found the examples...

ten

[gabrielefx]

surround your scene with a cylinder, sphere or cube
your camera must be placed outside this surrounding geometry
add a specular material to it
set ior to 1
add a SSS node, set its scale and value

[atome451]

You may also use a cube as child of the camera (for easy move) with inverted normals (normals oriented inside the cube) and the same fog material. In this case, you'll be able to move your camera inside the fog object.

[ten]

many thanks!

[aoktar]

You may also use a cube as child of the camera (for easy move) with inverted normals (normals oriented inside the cube) and the same fog material. In this case, you'll be able to move your camera inside the fog object.

you rock, thx

[atome451]

Thanks Aoktar. But it's not my idea, it's an old tips from Roeland (if i remember well).