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Kerkythea Rendering System • View topic - black area has stripes and metal is white
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black area has stripes and metal is white

Moderator: ModeratorGroup

<<

nuknuk

Posts: 10

Joined: Sun Jan 27, 2013 1:40 am

Post Thu Mar 14, 2013 5:38 pm

black area has stripes and metal is white

Tearing my hair here.

I don't know what else to do here doing combination of lights and materials, from chrome to brush aluminum, etc. pls see my attachments

And why is the middle that supposed to be plain black has stripes?

help pls
Attachments
3.jpg
2.jpg
1.jpg
Last edited by nuknuk on Thu Mar 14, 2013 5:41 pm, edited 1 time in total.
<<

nuknuk

Posts: 10

Joined: Sun Jan 27, 2013 1:40 am

Post Thu Mar 14, 2013 5:41 pm

Re: black area has stripes and metal is white

additional attachment is here
Attachments
4.jpg
<<

tridem

KT-Master

Posts: 982

Joined: Tue Aug 04, 2009 9:25 pm

Location: Treviso - Italy

Post Fri Mar 15, 2013 10:10 am

Re: black area has stripes and metal is white

I can't say with no doubt...but I think the stripes are produced by a z-fight issue, that is two co-planar faces with different material. You have to fix it in the modeling app (sektchup or whatelse)
The chrome material looks weird because of bad lighting/environment or a too low render setting.
Generally speaking...
Avoid any colour execpt pure black for the shadows
Avoid flat color background, use instead a sky color or better a studio global (there are some to download here in the website)
<<

nuknuk

Posts: 10

Joined: Sun Jan 27, 2013 1:40 am

Post Fri Mar 15, 2013 7:41 pm

Re: black area has stripes and metal is white

Thank you Tridem. I learned how to use globals. I also fixed the stripes.
<<

Fletch

KT-Team
KT-Team

Posts: 8564

Joined: Fri Oct 27, 2006 2:38 am

Location: Milwaukee, WI USA

Post Fri Mar 15, 2013 11:03 pm

Re: black area has stripes and metal is white

avoid using "ambient" in any material.
use "diffuse" color instead.
ambient + any specular makes the material reflect more light than it receives. This is physically impossible. So try not to do that.
Open and use and study good material libraries. Anything by PatrickS or Alex will be a good library to learn from.



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