Hi, I would like to know how to select the reflection on the wate on the scene plus the architecture so I can add both to an image I already have of where this structure actually goes. Does anyone know how to select only the reflection in the water, I've tried the reflection channel but no success.

It worked perfectly, thanks a million!

I am rendering with VRAY for sketchup and I don't understand why these black lines are appearing. The wood siding is geometrically made one by one, maybe thats the problem?