Digital Art Zone

stormlyght thank you. That is the best part for me, more than a pat on the back, is if you learn something from it. But it is sure nice to hear it from time to time.

OKay, I’m now fairly confident in saying that it’s fresnel that’s causing my cornea issues. It seems like it doesn’t work well with transparency, at least in Ubersurface 2, might have to try the default DAZ shader to test if it behaves differently.

If you check Omnifreaker’s site you’ll see that the fresnel effect shows the sphere as black in a lot of spots, this appears to still happen when combined with 0% opacity where, in my mind, it should be completely transparent in those spots, not darkened.

I tried without the fresnel effect and just got too strong of a reflection so I tried with some reduced reflection strength and fresnel on, I then got some transparency in the cornea but things were still too dark. Now trying a lower reflection with fresnel off.

Why have Fresnel on in the first place. It isn’t crystal glass.

Seriously yes we could use Fresnel but unless you are going for serious realism then I wouldn’t bother. I haven’t played much with Fresnel to be honest but I do know it can be fiddly to get the right settings. This is one of those aspects that needs understanding of how Fresnel works in the real world and then finding the right settings in the CG world.

Seriously I wouldn’t complicate things at this stage keep it simple. I have no idea why some people even use Fresnel on the skin.

It was mostly from mucking about with settings when I was zoomed right in on the eye, turing it on helped tone down some of the room reflections while keeping a nice catch light. But, while zoomed out it just made everything too dark (downside of tweaking materials with everything but the eye turned invisible.

100% reflectivity looked a little too intense with fresnel turned off but fixed the brightness issue at least so I’m thinking just keeping it off but dialing back the reflectivity is the way to go.

I agree, lower the reflection and leave fresnel out of the equation.

Now that I borrowed a machine that can run DS4.51.56 I can finally get around to a few things.

Firstly HSS (Human Skin Shader), Uber Surface and Uber Surface 2 but before I wade in a sharing with what I think I know I want to ask you (blanket you) if you think I am ready to part with my hard earned knowledge. This is a WIP but I wanted to see if I am worthy of the task I put before me. If you think the image below is good, skin and eyes wise then I will progress and get everything down on virtual paper. But I warn you this is going to take time so please be patient.

I have used Uber Surface on nearly every surface and use SSS on all the skin and eye whites and teeth. Also added fresnel and refraction on the Corneas etc..

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Pretty good.

The only thing I don’t like completly is the Tshirt, it seems to have a sheen to it that that sort of cotton doesn’t usually have.

Can’t seem to get the pic to enlarge - ok got it to work, internets a bit glitchy at the moment.

LOL WIP Yeah haven’t got around to dealing with other mats yet just the figure. I will deal with that later.

Sorry.
The skin does look very good

oh don’t be sorry please. You spurred me on to set up Uber Surface on the shirt and getting some nice results. I even went and imported the gun into Blender and applied a subD and smoothing mod to it and applied Uber Surface to that once back in Daz Studio. Oh man it really come up well if I don’t mind saying myself.

Just tinkering with the lightings now. I have to confuess that image had its Levels adjusted in PS, only a bit. I am trying to get close inside Daz Studio, but with this rig any really advanced lighting will have to wait. I am just using Area lights, Uber spots and UE2 for ambient fill only. I am just tweaking to get a better contrast and balance.

I wondered about what lighting you were using, I don’t know if I’ve ever used UE2 with Area lights, I will have to give it a try.

yeah but UE2 is set to Ambient Only meaning no Ambient Occlusion set to a mid to light blue at 5% Intensity and no map in the colour channel. It just filsl out the shadows a little more. Plus with using all Uber lighting (area dn spots)I can control the strength of the shadows and the colour.

scorpio64dragon - 08 March 2013 10:34 AM

Pretty good.

The only thing I don’t like completly is the Tshirt, it seems to have a sheen to it that that sort of cotton doesn’t usually have.

Can’t seem to get the pic to enlarge - ok got it to work, internets a bit glitchy at the moment.

Plain render out of Daz Studio no postwork. How does the shirt look now?

Looking good so far! Now you knew I was just going to have to ask about the cornea settings right?

LOL Yeah I did think that might be coming

This is for UberSurface2

Diffuse Strength 0%

Opacity 0%

Refraction ON
IOR 1.38

Spec
Colur White
Strength 82%
Glossiness 84%
Spec Sharpness 67%

Spec 2 Colur White
Strength 60%
Spec 2 Roughness 89%
Spec 2 Sharpness 97%

Reflection
Raytraced
Colour White
Strength 85%
Blur 1%

Multiply Refection Through Opacity OFF

Fresnal
Strength 50%
Falloff 1.00
Sharpness 1%

I also used the Eye morphs that I have for Genesis (not sure which pack they come with or come as standard) and used the Cornea Bulge Morph at 40%. Saves using a bump map.