KeyShot Forum

Technical discussions => General discussion => Topic started by: pietergoris on July 18, 2018, 01:16:04 AM

Title: Ground reflection washed out by emissive spheres
Post by: pietergoris on July 18, 2018, 01:16:04 AM
Hi all,

My first post here and already questions questions questions.
I attached a scene where I changed my model (which I don't want to show yet) with an aqua sphere.
Problem is I want this exact lighting and settings, but my emissive lights wash out the reflection in the ground plane. They are visible in other words and give a white spot in the reflection.

I used the ground plane to be able to crank up the reflection instead of using the standard ground reflection option.
Is there any way to eliminate that? If yes, can someone show me? Because I'm pretty new to keyshot so don't know all the toggles and features yet.

Many many thanks for your time and effort.
Regards,
Pieter
Title: Re: Ground reflection washed out by emissive spheres
Post by: INNEO_MWo on July 18, 2018, 01:22:18 PM
I think the simplest way is in post pro. Just two renders. One with the ground reflection but a non light material on the sphere. And another with the light material sphere but without the ground.
Then overlay them in post.


Otherwise a very complex material graph is needed (Bdesign posted that solution a while ago) to get the same result.


Hope that helps


Cheers
Marco
Title: Re: Ground reflection washed out by emissive spheres
Post by: pietergoris on July 18, 2018, 02:33:07 PM
Thanks Marco for your fast response.
Much appreciated.

Regards,
P.
Title: Re: Ground reflection washed out by emissive spheres
Post by: INNEO_MWo on July 19, 2018, 12:11:29 AM
OK - there is a simple solution without using post processing. The combination of color to number driven by a color fade increases the contrast on the washed out areas.

For details just look into the multi material of the ground plane.
(The ray mask can be activated using the experimental features)


Hope that helps

Cheers
Marco
Title: Re: Ground reflection washed out by emissive spheres
Post by: pietergoris on July 19, 2018, 04:44:55 AM
Thank you Marco for showing me.
I'm definitely gonna try that one out later today.

Much appreciated!
P.