Blackmagic Forum

Well i wanted to place a some type of polaroid in a 3d space and with particles in the background animated towards the camera, i got the work done but the particles ( blob ) when crossing through the image plane create a weird type of black aura/glow surrounding them which is getting me annoyed and i cant find a workaround except switching the particle style to point but that is not what i need, i have linked the images of my problem