material questions

[proces2]

i am wondering how to create a couple material types.

first - architectural glass. i'd like to have something that has a good fallof (fresnel) quality to it, but i am not sure where and what the right parameters are in the vray material to create this. i have created a glass using standard material with fallof opacity map and vraymap in the reflection channel. this works but takes a LONG! time to render.
with a vray material, do i turn on reflections by just checking the 'frensel reflections'? or do i use a vray map in the reflection channel? then how do i determine the amount of reflection? and what sort of depth parameters can i reduce to get the render times under control?

second - alum (like a mullion for a glass curtainwall). i just want it to have some specular quality to it, but not a clear reflection.

i am coming at this from having a strong control over how MAX standard materials work. it seems that there is a different mindset though in understanding how the vray materials work.

thanks, in advance, for any help.
sean

[bakbek]

Play with it... that's the fun part.

For Glass

Diffuse = Black
Reflection Color = around 50 ( depends how much you want to reflect )
Refraction Color = less the 250

you can either check the Frensel Reflection or use a Falloff map in the
reflection slot

check affect shadows
and play with the fog for tint

DO NOT USE VRAYMAP with VRAY MATERIAL it just doubles calc and the mat comes out odd.

For Alum

Diffuse = Gray U like
Reflection = depends what Alum you want but 180 - 200 is a good start for a polished one
Refraction = 1.44

Play with the Glossy value to get that NOT CLEAR Reflection and use either FRENSEL or FALLOF

this is just one of many things u can do, but it's a good basic start for playing around with the material and having fun.

hope this helps.

Regards, Bakbek