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ywmang
07-26-2002, 06:20 AM
whenever I assign reflection to a surface (raytrace, flat mirror or reflect/refract) the surface will be much brighter than without reflection.
what setting should I have to reduce the brightness?

Oren Ben-Tov
07-26-2002, 08:50 AM
maybe try to check your enviorment color, if its white it will reflect it.

ywmang
07-26-2002, 09:38 AM
but I always set environment color black....shouldn't be this problem..
it seems to me that the reflected image is added (by additive method, like photoshop) to the surface.:shrug:

luigi
07-26-2002, 12:14 PM
if you use brazil

go to your material editor.

in the slot of reflect or refract

use a fallow map

go to the output parametres and reduce teh output aumount:

like 0,5 or 0,6.


this tecnic will be good with brazil

in final render you could make the same with absortion in advanced settings in finalrender parametres

:thumbsup:

luigi
07-26-2002, 12:27 PM
or you can do this if you use only sacline max rendered :


you can in raytrace material

apply a tint in raytrace for make it less brightness.

in advanced raytrace settings.

sorry for the image but i have the max version in spanish.

Das
07-26-2002, 09:26 PM
Assuming you don't want something that's 100% reflective (like a mirror):

Use the Raytrace material.
In the Reflection Map, use a Falloff map based on camera Z, with a falloff of Fresnal.

This makes the object reflect a lot at the edges and not much at all dead-on. This will preserve the color and texture of the object much better than using an even reflection with a percentage reduction (by lowering the percentage on the reflection map).

You can adjust the two color swatches in the falloff map to increase or decrease the maximum and minimum values of the reflection, and you can adjust the IOR to control how much the falloff falls off.

Hope it helps. My reflections improved 1000-fold when I learned this technique.

Marcel
07-27-2002, 03:47 PM
Reflections are added to the diffuse surface color, so they will always make your surface brighter.

Make sure that the base color (diffuse color) of your object and the reflections complement eachother.

Say your object has 65% reflections, then your diffuse color should be a dark color (like 35% grey).
A good chrome material should have a very dark diffuse color, and about 85 or more % reflections.
A perfect mirror can have 100% reflections, with a black diffuse color (and ofcourse, specular turned off).

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