Render out transparent background

This is probably a stupid question, but I am new to Cinema 4D and Corona, so here we go :smiley:

How do I render out a scene with HDRI-Light material on the Environment, with a transparent render result (no BG showing up in render)? I call it alpha.

Seems like Alpha is always on/active, so just use proper image file format when saving.

note
You can see, observe alpha channel in:

  • CFB (short for “Corona Frame Buffer”): Passes drop down list (BEAUTY, Alpha…)
  • C4D Picture Viewer: Layer (Background, Alpha…)

enjoy