Potato Chips with thickness-need help!

[toddd]

Hello everyone,

I am working on a project where I have a bowl of potato chips that need to be as close to photo-real as possible. I had some ok results with vray 2sided mat(leaf tutorial) when the objects were single sided geo, but unfortunately I need to have thickness. So now I have been experimenting with sss2. I have been using the vray manual as a guide, and tried the potato preset as a base. when I add a bitmap to either the overall color or diffuse color, the potato preset becomes much darker than the material without. So I adjusted the overall color to 50.0, and the diffuse amount to .75. Better but still dark. I am also having problems with the spec/reflections. I am not getting enough control over the reflect using IOR.
Any suggestions for all of the issues mentioned? sorry I cant show any images.

Thanks for any help!

Todd

[claude_tnt]

shell modifier is your daddy....

[toddd]

Yeah, the modeling isn't the problem, the material is the issue. I think I may have solved it, rendering now

Thanks for the reply!

Todd

[pskdude]

please post something im so interested in what this may look like..lol i wouldn't even know were to start haha.

[toddd]

Hey Ruben,

I am on the right track, I need to tweak it a bit more.
The best solution was a vray material with ward brdf, a grunge image controlling the refraction amount. Kept the refract glossiness around .7, the ior at 1.1, and the max depth at 3. The thing I found was that SSS isn't really necessary. I also stayed away from the translucency types like wax. I used a .6 reflection glossiness with falloff. Sorry I can't post more than this right now, this is work related. I'll post a small image when I get the chance to upload somewhere.

Todd

[pskdude]

Cool! most definitely! ill look forward to it. =P

[jstrob]

I am also trying to make a potato chip! Would like to see your renders!

[Morne]

I would just like to see

[ior=0]

nom...nom...my mouth is watering, what flavor are they
+1 for seeing them too

[Da_elf]

just had some pringles to pass the time while you get the image ready to upload

[dmf-123]

When are the chips getting here...? And will there be dip too...?

[peterguthrie]

woohoo, party! I'll bring the beer

[prateekvishwa]

haha ha u guys are funny lol, m as well eager to see chipsss