HDRI in area light...?

Corona Corona for Cinema 4D General
1

Hi,

anyone can help me how to add hdri in area light…?

thanks,
imran.

2

You need to use a plane with light material on it, when I remember right.

3

It shows reflection on floor… which I dont need, but I need reflection on product.

…

4

in that case you don’t have chance… Right now it is not possible to use textures in lights.

5

ahhhhh…!

I think I did this in request feature for Light Tag… if it is, the problem will be solved and handy, instead go to other long way…!

I hope developers will take notice of this.

…

6

Compositing solves your problem.

7

I don’t think so… I tried that also.

With compositing, light reflection goes from floor but it goes from object also… which I dont need.

If you have some trick… love to see that.

…

8

I meant Photoshop, Nuke, etc.
When reconstructing the image to fine tune colors, you just leave out the reflection for that part.

9

To create HDR textured light:

  1. Create Polygon Object (ie. quad)

  2. Create Corona Light Material, use your HDR texture in Emission channel, Texture slot.
    Within “Emission channel > Include/Exclude” you can set which object will be affected by the emission shader.
    Note: Only applies to direct paths/rays. Secondary paths/rays are kept visible.
    To further control/manipulate Emission visibility use Advanced settings.

  3. Apply material to the geometry. Map as you please.

e.g.

gecWYta.jpg
gecWYta.jpg1464×720 158 KB

& stay well

10

wow… it works.

I think… I am getting older… not keeping tips remember all the the time…!

thanks for helping.

Imran.

11

and what do you do if there is no separate object, just part of a texture? like a label on a bottle?

12

Oh wow, didn’t know that Include/Exclude is already integrated in light material!
So my answer was bulls***!

13

Here are few fast ways - Either:

  • create specific, proper reflection texture out of existing albedo/diffuse/color one
  • make & set poly selection, duplicate material, disable reflection, set selection tag
  • create new Plane object for label (duplicate material, disable reflection) Shrink Wrap it to the bottle.
14

Thanks, but I wasn’t really looking for an answer. I just wanted to point out that such problems could easily be solved in post.

15

everything can be solved in post, but that isn’t why we’re here (Q)

16

Yes, everything can be done and it’s usually the last 10-20% of the work, though some members are still just saving the beauty output and play around with some filters.
I just wanted to point them subtly, into that direction, so that they see that composited image gives one much more control over the final output.

Need 4% more or less SSS strength? Don’t need to render all those frames again, especially if the client later decides it to have a different hue etc.