Ground Reflection question

[olika]

sometimes....

Have a simple setup here (see attachment) with a simple reflecting ground plane.
But i got i weird result with the reflection from that little logo patch.
It should not reflect that white, right? But why is it happening?
Seems ok when i use a regular not reflecting vraymat but as soon i make it reflect it`s turning out way brighter in the ground reflection?

[Rens]

Hey, it's probably (indirectly) reflecting a light or reflection plane. As you see it via the floor it will reflect a different part of your lighting env, mainly up instead of down.

[Syclone1]

Hey, it's probably (indirectly) reflecting a light or reflection plane. As you see it via the floor it will reflect a different part of your lighting env, mainly up instead of down.

I agree with Rens, if you want to test that then lower or raise your camera and see if the reflection in the reflection of the logo changes.

-dave

[olika]

thanks for the fast reply!
i follow you on that one, it changes with the camera angle.
But i twist my brain now with behavior of reflections in that case. In other words it is behavior of a reflective object on a reflective ground?!
But how to control? I try to put a light to get a nice reflection on some upper corner of the object and then when the light is in a bad position the logo starts to shine only in ground reflection?
Any ways to avoid that? Playing around and finding better reflector positions?

[Art48]

Play around. It's just how light behaves.
For a hack try lowering the reflection depth for the groundplane to like 1.