I've been trying to render the background on my image as transparent so I can put my images together into an animated gif with a transparent background. I suppose PNG would be best as it supports transparency, but is it possible to render the background transparent? I didnt find any tutorials that gave me any hints...
You just have to select a format that supports alpha and
make sure the RGBA button is selected instead or RGB or
BW and your all set.
Also, make sure to select Key or Premul instead of Sky as a background option (Scene settings F10).
Life is what happens to you when you're busy making other plans.
- John Lennon
Unified renderer somtimes does better rendering when it comes to alpha channels.
(Thinking of HALO's and volumetric lighting)