I'm trying to render a very simple animation with an alpha channel so I can do video composting to it. I'm using 3ds max 2010 SP1 with VRay Adv 1.50.SP4a. The issue that's going on is that there's a 1-2 pixel white matte/outline the geometry edges because of the alpha channel. I'm rendering as a targa sequence with a split alpha.
Other areas I've played around with is the the material window, where I made sure the "Affect channels" is set to "Color+Alpha", but overall I'm trying to figure out how to make the alpha channel more precise without the couple pixel edge.