Hasta La Motion!

Hi guys and gals,

I received all the layers for building a SSS composite on a character (tentacle from my other posts) and I was having an issue with the backscatter. First motion vector problems, now sss! In trying to better understand how skin works I came to the conclusion that my layer order should be.

Backscatter <merge(plus)> Subdermal <merge(plus)> Epidermal <merge(plus)> Specular <merge(plus)> Reflection <merge(multiply)> Ambient Occlusion.

I get a decent result with everything but the backscatter. It doesn’t seem to be doing much at all. When rendering inside of Maya the results look very good – but consequently something is happening when we render the SSS as layers for compositing. My questions are:

1) Are we approaching this the correct way with the type of layers? I believe we need a diffuse layer so I mentioned that to the 3D guy and he’s going to try to get that to me tomorrow.

2) I would think that the epidermal and subdermal need to have some sort of transparency map applied to them, but maybe I am wrong? They look awfully opaque so I was reducing their opacity inside of nuke.

3) Is there a specific way that nuke needs to handle the layers? Ie: Specific math to replicate the look from maya?

Please check out my script in the images below. The images that have backgrounds are renders from the Maya artist. You can clearly see the transparency in the suction cups of the tentacle – thats what I am losing in Nuke. You can also see a render of how the backscatter should interact with the epidermal. You can download 1 frame of each pass along with my nuke temp project here (if you want to play around):

http://nickguth.com/vfxtalk/RenderPasses.zip

If you guys have any thoughts or processes that would be greatly appreciated! We’re trying to nail out what render layers we need this weekend before we pound the render farm at school with 50+ shots. Thanks!

For those who are going to download the files to look at: Could you let me know if the passes look correct? I was thinking the fresnal pass looks kind of wrong, but I don’t really know for sure.

Cheers.

Attached Thumbnails

 

 

Is it?
http://www.youtube.com/watch?v=WnY59mDJ1gg

hey everyone,
i am from Pakistan and completed my a levels(maths physics chemistry) last year may/june09.I took a gap year because i wanted to study abroad but my father was reluctant he wanted me to study engineering(that’s what i’d be doing uptil now) but now i have convinced him somehow.Filming and photography were on my mind but then i met one of my relatives who’s a 3d modeler,product designer and he’s my inspiration to cg.
So from past 5 months i am working in 3d with a help of tutorials from lynda & digital tutors(going to get gnomon’s dvds soon).Vfs was on my mind till last month but i have planned for working in states for which i have to have a 4 years degree and some experience.Which VFS & LBL won’t give me,then i looked up for SCAD’s visual effects degree but i have to take a S.A.T exam first? and i am ready to take traditional arts foundation as well and i have not touched the particles yet but modeling so i just have the stuff for portfolio which is in the tuts? is that enough or should i model something on my own.
I have some relatives in virgina,manhattan,ontario and in uk as well.But my preference would be U.S/Canada.So please refer me some universities and save me from stale engineering (my father actually) =/ he’s got the money but he doesn’t spend on me :d and yes i guess i’d be the first one from Pakistan to earn this degree lol
my aim is to learn visual effects & animation as well and God forbid if i’d to leave states after completing my bachelors,i’d be experienced enough to make music videos or tv commercials in my country and return the money to my father 😐
thanks

Any one using using….need help to set the plugin to work…tried the documentation page but cudnt get clue..
http://danbethell.github.com/rmanconnect/

any explanation to how to make it work,

thkns