Raised cornea for G9?

jkj

This might be a bit of n00b question, but how to adjust the cornea bulge or to raise the cornea on G9?

All my G9 experiment's eyes look flat.

thanks for any help.
 

myotherworld

its the same with a lot of G8 

lilweep

myotherworld said:

its the same with a lot of G8 

well there's a cornea bulge morph... 

jkj

Yes there's a bulge morph for G8, but what about G9?

chevybabe25

To my knowledge, there isn't one. But in my opinion, it's not needed.

G9s basic set up is lovely, and the only thing needed is a catch light.  Certain angles they can appear flat because the eyesurface shader lacks volume.   I have a set in the store that is set up to refract correctly on the cornea and will give more depth if you really require it.

https://www.daz3d.com/natural-eyes-9-merchant-resource-for-genesis-9

Timbales

You could try making a geoshell of the eye and apply a deformer morph to the shell to create the bulge effect. Applying the Daz Iray thin water shader that comes with Studio may give a good look. It's a theory, I'd have to try it when I have time.

Timbales

It has a bulge by default. Did you want it more pronounced?

 

Richard Haseltine

Timbales said:

You could try making a geoshell of the eye and apply a deformer morph to the shell to create the bulge effect. Applying the Daz Iray thin water shader that comes with Studio may give a good look. It's a theory, I'd have to try it when I have time.

A Geometry Shell is a copy of the base geometry, it cannot be acted on apart from that other than scaling/push modifier and materials.

Gregorius

chevybabe25 said:

Certain angles they can appear flat because the eyesurface shader lacks volume.   I have a set in the store that is set up to refract correctly on the cornea and will give more depth if you really require it.

Would you be willing to share the math and/or science behind your volume/refraction technique so that I might be able to adapt it for Poser?  Currentlty, I use a feathered mask to vary the refractive index.  It's 1.38 for the whole eye surface, except that on the region covering the iris/pupil, that number gets multiplied by 1.34, the refractive index of the aqueous humor, if I recall correctly.

chevybabe25

I have done something very similar with masks too Gregorius. G9 no longer has its own cornea surface so it is a challenge. There is no real math. IOR of real world is a good starting point for the cornea, but theres a lot of variables (3d inaccuracies, shaders etc) that make things like this not "real world". I offered a setting of 1.34 (default), and several others(much higher)  that you can see in the example and just labeled them as strengths.  Below is just as example of how the G9 eye behaves with different lights at different angles with my other settings.   Most noticably is the size and strength of the reflection on the cornea. 

dan_thomas

As of 4.23.0.1, refraction index at surfaces tab seems to be the only option to adjust the eye reflection

crosswind

dan_thomas said:

As of 4.23.0.1, refraction index at surfaces tab seems to be the only option to adjust the eye reflection

Not really ~ and it has nothing to do with DS version but Iray Uber shader + settings on G9 EyeMoisture surfaces.

Setting Refraction Weight as 1.0. is the prerequisit of makeing Eyemoisture transparent. Then Glossy Layered Weight literally controls the reflection effect.

You can also use Cutout Opacity maps to customize "reflection effects" as chevybabe showed. In that way, you won't need Refraction Weight anymore.