Opacity Material Backside Multiply

[hubmer3]

Hello i have a question.
How do i can archive a transparent material without the backside which multiply the opacity?



thanks

[svetlozar.draganov]

This is not possible out of the box but you could get the effect you are looking for using Refraction instead of Opacity.
Just set the IOR to something really low like 1.01 which will make the Refractions to look like Opacity.
Then create a VrayOverrideMtl and plug the Refractive materials in its Base slot, next plug a completely transparent shader in the Refract slot and assign OverrideMtl to the geometry.

Example:


Scene:opacity_2015.zip

[hubmer3]

well thanks for that!

i solved it with disable visible for reflection/refraction in objectproperties.
but your option is way better because my workaround have some disadvantage with reflection...

thanks again
problem solved

[svetlozar.draganov]

Glad to hear that this workaround will be of a use