So, I normally never render in images, but for a poster I now did, and the result is terrible and I can not figure out what it is. So the lines around the helicopter and below the hill age, so white. And it also not seem to cover 100%, (see the squares over the whole image) For comparison, right the same but printscreen render in avi

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So, in another scene I had the same problem, but now I figur it out. When you don't use a sky and the prop that supposed to be the sky is not 100% opacity, the project background color will leak true in the form of hard outlines on the first thing it wil hit after the wanaby sky. I classify that as a bug.

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