PNG with alpha & render elements

[dirkmyers]

I might be doing something wrong. Whenever I render a PNG with any extra render elements (object mask, material mask). I lose the alpha properties in the rendered image. My background is set to black. Any help?

[Alexander.Atanasov]

Hi dirkmyers,

Whenever you enable render elements an alpha render element is generated in addition to the ones you selected so you can use that and mask out the background of your image.

Best regards,
Alexander