Aereal view ilumination

[Bowcat]

hi!

Does anyone know how can I make an object (a roof) transparent for environment light and for camera, but not invisible for an external light (sunlight)?

This is for an aereal view of a floor. I want sunlight through windows and general environment light everywhere.

Thanks.

[zapcat]

For invisible to camera select the roof, right click it, go to properties and untick 'visible to camera'.
For environment go to the system area of vray, click object settings, and reduce the receive GI, I think. Can't be 100% sure on that one.

[Bowcat]

That makes the roof black instead of invisible.

Thanks anyway