From the course: Creating a Short Film: 09 VFX Environments

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Creating a luma key

Creating a luma key

From the course: Creating a Short Film: 09 VFX Environments

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Creating a luma key

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of a green screen or a blue screen background so you kind of have to improvise. And in the next tutorial, we'll look at what to do if you're like really stuck. But in this tutorial, we're going to look at how to use a background that is much lighter or much darker than your subject in order to get a key. This is called pulling a luma key or a luma matte. It's one of those really common VFX things you're asked to do a lot. I use a luma key on this shot and the assurance because my portable green screen wasn't quite big enough to cover Nati for the entire time that she was walking up. Also, all this awesome wind that these dudes were doing were kind of blowing the green screen around and just making it so it was just really a challenge anyway. It was going in front of her, to the side of her. It was just too much to mess with. I also realized, hey, I'm pointing up into a very cloudy Pacific Northwestern sky. And I knew it was going to composite eventually in front of a really cloudy…

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