Rendering with transparent background in houdini

[eddi_fuhrmann]

Hey there!

Need to render some images without background for later composition. No BG geo in the scene and no HDRI. Tried to use some alpha map in the AOVS but it´s not working...Can some one help me here?

thnaks and take care!

[schwungsau]

i think you looking for the camera contribution
https://docs.arnoldrenderer.com/display/A5AFHUG/Skydome+Light

[eddi_fuhrmann]

i actually don´t have a skydome light/background in the scene. i just want to render without background for later comp but it stays black