Feather iridiscence

[Feraud]

Hi

I’m trying to get a hummingbird feather iridiscence using hair, but not sure how to get it

I’m overlaying a image to place color over the feathers (althoug I use vertex paint to use it as attribute to get that, other possibility) I know there is another principled Hair but not sure how to use it to get that effect. Any idea, please?

[pixelgrip]

you mixshader setup is wrong.what you now have is the top shader is mixed with 60% black and the lower shader is mixed with 40% black.

I am not sure about the reflection-transmission hair shader,anyways you can connect the transmission hair shader into the free shader slot in the upper mixshader,and delete the addshader and the lower mixshader.
(only one mixshader with the two hairshader into it)
then you could connect a fresnel input to the fac of the mixshader.

maybe some has more experience with this kind of hairsetups

for the iridescence colors you could try a thinfilm shader.but for a simple setup you can use a colorramp that is driven by a fresnel input.

similar to this setup for the colors

How to make material for camera sensor color?

something like this? increase facing value for “sharper” angles,and finetune the colors to your like in the colorramp. [sensor1] a high gloss (metallic) version,with noise tex to break up the normal facing.colormix controls overall break up.distortion in the noise tex, is best to try different variations. [sensor2]

[Feraud]

Thanks, pixelgrip. I’ll take a look