colorize reflections

[DerSchlex]

Hi folks,

I got to model a thin glas-plate (in LW 8, without nodes!) that is thin-film coated. The color of seeing thru is changing on an incidence-angle from red to orange. No problem with that, i have added a gradient to the color-chanel.

But on the same model the reflections should be colorized to. With changing incidence angle the colorized reflections should go from dark blue to green. On the reflection-Texture-Tab I can only place a gradient in black/white, that changes the amount of reflection. But how can I tint them in the described way?

I would be glad if anybody could give me a tip about my problem.

greetings,
DerSchlex

[Abigor]

hmmmm, just a guess, not sure if this would work, but have you tried the Color Highlights, or Color Filter in the Advanced surface tab?

another solution would be to render the reflections as a seperate pass, then you could color correction them as necessary in comp.

just 2 thoughts off the top of my head. hope i helps!

[DerSchlex]

the colorfilter influences the transparency-color. this i use to make the glas red, and all whats behind, seen thru. the color-highlight makes , yes, the highlights nicy colored.

On the buffer render export as an image filter i used the "reflection" saver. the little confusing about this is, that the alpha chanel is plain white on all the glas-surface. ? How can i make the alpha chanel be so transparent as the intense of the reflection: strong reflex is opac, small reflex is transparent ?

[Captain Obvious]

You might be able to achieve this using two polygons. One that's 100% transparent with an IOR of 1.0 and some reflections that's positioned a micrometer or so in front of another polygon.