Hello.
After saving file in .exr, .png or .tga format there appears a problem with the composing file using alpha channel. The objects have contour around them with the color of background. If tha background is black, the contour is black. If the background is light, the contour is light too. Such problem doesn't appear in V-ray or Mental Ray.
What should I do to have an opportunity of changing background without such bugs?
