Forum: Poser - OFFICIAL


Subject: I wonder

sheedee3d opened this issue on Sep 15, 2014 · 39 posts


ghostship2 posted Sat, 27 September 2014 at 11:15 PM

> Quote - Ghostship, the skin and eyelash textures from your images posted 17 Sept are awesome, but I think the eye reflection is wrong. Eyes aren't glass balls. These three images are all portrait images, and one thing that is missing from all three is the surface reflection of the entire scene. I think the problem is in the cornea; the default mesh allocates it a material zone, but it has no effective shape. > > Of these images, two are studio shots; that means the room was almost certainly dark so only the light aource is visible. Not an entirely fair comparison to your images, given that they are in a wide, well lit environment. > > The image lower left is an outdoor shot (as indicated by the dilated pupil and how bright the iris is, and the fact the person was supposedly shooting in the desert) but there is still no real 'reflection' of the scene as you are getting. > > I tend to wind back (halve) the value for reflection on the cornea after running EzSkin. Snarly's values are probably correct if the geometry of the eye was correct. My adjustment isn't ideal, but it's a quick fix to stop haveing mirror ball eyes. > > While it is possible to get that horizon line across the eyeball, it's not a common thing to see. It certainly shouldn't be in every render.

Hey Piersyf

Yeah I've stuggled with eye reflections for ever. What it looks like to me on real eyes is that strong lighting/sun shows up quite well but the rest of the reflection is muted. I have tried this a bit by plugging the reflect node back into the reflect value plug. It doesnt work all that well....I just don't know what combination of shaders will do this (like turning up the contrast on the reflection.)

Normaly I use the eye surface for the reflects and leave the cornea invisible. but here is an attempt at the oposite. I had to make a mask in Photoshop to blur/fade out the edges of the reflection to remove the razor sharp edge of the iris. The sclara has a similar mask to blend the transition with the iris.

Anyway, I'm nt smart enough to figure out how to get that contrast thing going with the cornea reflects (BB maybe you would know how to do this?)

W10, Ryzen 5 1600x, 16Gb,RTX2060Super+GTX980, PP11, 11.3.740