Quote - Not sure where you got the Refractive index of 0.200 from

...default value - not sure what to set it at. Sure glad you've had some info on this - I was in the dark.

Quote -
but it's bound to give you really funky results.

Oh, ya betcha, mate - they were wonky!

Quote - Set it to 1.0 (= R.I. for air/vacuum) for stuff that's supposed to be completely invisible.

See attached image:
Apply the hair texture to Diffuse
Apply the Trans map to Refraction
Click the word 'Refraction' - A
The image appears in the Texture editor box at B
Click it and the texture properties open at C
Check 'Inverted' (because in poser transmaps white means solid, whereas in Kerky white means transparent)

Same thing for lashes, only you can probably use a colour for Diffuse instead of the map.

I would use no specular while you're getting the trans stuff to work. Then if you apply specular you'll probably see a filmy effect appearing in places where the mesh should be invisible (like at the tips of the hair). You'll need to apply the trans map again as a mask so that the specular is limited only to where the actual hairs are visible.

This is exactly what I was looking for - I wasn't getting all the parameters from Fletch on the Kerkythea forum, and I had nil clue what to be setting things at.  There is no information - or at least, I have not uncovered any! - about the white/black visible/transparent disparity between Poser and Kerkythea - how the heck did you find this out?? Hats off to you, mate - this is a key discovery! ... a major shoulder-up.

And believe me, the Poser community will thank you for this, too. I'm going to have a go tomorrow morning - this is a Sat nite with my workmates (nurses, yes, we like the grog!) and whilst I'm obsessed with this, I think I need a clear mind to be nutting it all out.... see ya in the morning, and Happy Blummin' Mother's Day, hey?

Cheers,
Robyn

Monterey/Mint21.x/Win10 - Blender3.x - PP11.3(cm) - Musescore3.6.2

Wir sind gewohnt, daß die Menschen verhöhnen was sie nicht verstehen
[it is clear that humans have contempt for that which they do not understand] 

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