Blinn, Phong or ward BDRF in what case ?

V-Ray V-Ray for 3ds Max General
1

Hello Guys, Hello Vlado,

I’ve just found this :

http://forums.cgsociety.org/showpost.php?p=3704117&postcount=2

I’m just wondering when using Blinn, Phong or ward ?

Metal, plastic, anisotropic shader ?

What is the best use with vray, what is the vray “correctness”.

Best regards…

2

From what I’ve seen, people often use Ward for metals, and Blinn/Phong for plastics.

Best regards,
Vlado

3

So there is no particular reason to use blinn instead or phong, only the tweak can make the difference or there are particular cases where Ward (for example) is more efficient than the other ?

Best regards…

4

If by efficiency you mean calculation speed, Phong is fastest, followed by Blinn, and then Ward, but these calculations are usually just a minor part of the rendering compared to everything else. All in all, it comes down to what looks best.

Best regards,
Vlado

5

What about natural/organic stuff like fabric & wood???

Thanks

6

I would actually use Ward for fabric, and for wood that is not overly shiny. I find ward is pretty glossy looking even at .98-.99 glossiness, so the “minimum” is pretty glossy by comparison. THis makes it pretty handy for fabrics - you don’t need to go as low and thus push render times up higher. Seems to work for me anyway.

Otherwise I’m with Vlado: blinn is the one I usually use for shinier plastics and non-metals, but the difference between that and phong is usually pretty minor in practice. YMMV

/b