Bumping this older one here, because I didn't want to start a new topic =)
Recently I've been messing around with transmapped hair materials.
So far I found, that a mix of diffuse and glossy can make quite a nice look, but I'm never sure, what I should plug into the Transmission node, of the diffuse material.
Is this node rather meant to be used with a greyscale something (some black/white image, or greyscale colour 0 - 1) or something colourful (RGB colour, image map)?
Changes in the Transmission node indeed makes drastic changes to the outcome of hair, in the final render.
How do you guys prefer to set up your hairs?