Forum: Carrara

Subject: Eyeballs

ShawnDriscoll opened this issue on Dec 15, 2005 · 25 posts

ShawnDriscoll posted Thu, 15 December 2005 at 11:52 PM

Here's an eye I'm working on.

www.youtube.com/user/ShawnDriscollCG

ShawnDriscoll posted Thu, 15 December 2005 at 11:53 PM

And a quick render after basic shading. I managed to get red-eye in this one.

www.youtube.com/user/ShawnDriscollCG

ShawnDriscoll posted Thu, 15 December 2005 at 11:55 PM

Question: Does anyone happen to know the refraction value for corneas?

www.youtube.com/user/ShawnDriscollCG

ShawnDriscoll posted Fri, 16 December 2005 at 12:01 AM

I'm using Anything Goos for the cornea so that its edge is white while keeping the rest of the cornea clear. It helps to blend the cornea object with the rest of the eye.

www.youtube.com/user/ShawnDriscollCG

matrixmode posted Fri, 16 December 2005 at 12:06 AM

Attached Link: http://www.RenderAid.com

The refraction value for the cornea is: 1.38 Lens: 1.41 Aqueous humor: 1.33 Vitreous humor: 1.34 Nice eye you've got there! :)

"Simplicity is the ultimate sophistication." Leonardo da Vinci

matrixmode posted Fri, 16 December 2005 at 12:08 AM

Attached Link: http://www.renderaid.com/infoDetail~p~d~id~1027~sid~1005~f~Resource.aspx

Sorry 'bout that, here's a direct link to refraction indexes.

"Simplicity is the ultimate sophistication." Leonardo da Vinci

ShawnDriscoll posted Fri, 16 December 2005 at 12:17 AM

Cool! Here's a before render shot.

www.youtube.com/user/ShawnDriscollCG

ShawnDriscoll posted Fri, 16 December 2005 at 12:18 AM

And an after render.

www.youtube.com/user/ShawnDriscollCG

ShawnDriscoll posted Fri, 16 December 2005 at 12:21 AM

I'll texture the white part using translucency.

www.youtube.com/user/ShawnDriscollCG

ShawnDriscoll posted Sat, 17 December 2005 at 2:26 AM

Updated the refraction values. Here's a front shot.

www.youtube.com/user/ShawnDriscollCG

ShawnDriscoll posted Sat, 17 December 2005 at 10:42 PM

Still have to texture the white part. For now it has reflection and translucency going on. Anything Goos and Veloute 2 was used on the iris part. HDRI skylighting and Indirect Lighting provided the lit room and eyes. And one bulb provided detail lighting to show the iris.

www.youtube.com/user/ShawnDriscollCG

ren_mem posted Sun, 18 December 2005 at 2:34 AM

Nice.

No need to think outside the box....
Just make it invisible.

ShawnDriscoll posted Sun, 18 December 2005 at 4:03 AM

I should have quit while I was ahead.

www.youtube.com/user/ShawnDriscollCG

ShawnDriscoll posted Sun, 18 December 2005 at 4:35 AM

This might be better.

www.youtube.com/user/ShawnDriscollCG

Nicholas86 posted Sun, 18 December 2005 at 4:54 AM

Trying fading the vessels with a gradient. Something doens't seem right with the iris.

ren_mem posted Sun, 18 December 2005 at 5:31 PM

Yeah and the floating eyeballs doesn't help either. LOL Just put a big christmas bow in the middle.

No need to think outside the box....
Just make it invisible.

ShawnDriscoll posted Sun, 18 December 2005 at 6:02 PM

I couldn't get the gradient to travel from front to back. I used a Cellular pattern to fade out parts of the veins. Added more color depth to the iris, too. I hid the body from the scene so that I could work on the eyes easier. Thus the floating. It also lights up the eyes better so I could see how shiney/reflective they are.

www.youtube.com/user/ShawnDriscollCG

Ringo posted Sun, 18 December 2005 at 6:12 PM

Veloute 2 has some good gradients.

ShawnDriscoll posted Sun, 18 December 2005 at 6:33 PM

I'll give them a try. Thanks!

www.youtube.com/user/ShawnDriscollCG

ShawnDriscoll posted Sun, 18 December 2005 at 6:43 PM

It didn't do what I was looking for. But Shader Ops had the UV gradient I needed. Now to do eye lashes and hair.

Message edited on: 12/18/2005 18:45

www.youtube.com/user/ShawnDriscollCG

Miss Nancy posted Sun, 18 December 2005 at 7:37 PM

litst did a tutorial on creating an human eye in carrara (linked in this forum) several years ago. the tutorial incorporates the modelling of the eyeball, lens, cornea and the concave iris IIRC.

ShawnDriscoll posted Sun, 18 December 2005 at 7:56 PM

I'm curious how his eyes turned out. The eyes that come with Jessi in Poser 6 is what motivated me to make eyes that are more real. And I was curious if I could do it without using texture files.

www.youtube.com/user/ShawnDriscollCG

ShawnDriscoll posted Sun, 18 December 2005 at 8:26 PM

I found his. It's one piece like some of the Poser eyes are with no retina or pupil.

www.youtube.com/user/ShawnDriscollCG

ShawnDriscoll posted Sun, 18 December 2005 at 9:01 PM

Another red-eye flash test. My brother as been using Google to remove the red-eye from these images. It even works.

www.youtube.com/user/ShawnDriscollCG

ren_mem posted Mon, 19 December 2005 at 7:20 AM

Looks much better...I was teasing about the floating eyeballs.

No need to think outside the box....
Just make it invisible.