From the course: Digital Media Foundations

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Expanding (and compressing) the luma range with Levels

Expanding (and compressing) the luma range with Levels

From the course: Digital Media Foundations

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Expanding (and compressing) the luma range with Levels

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- [Narrator] Whatever display you're working with, there's going to be a maximum brightness for each pixel and a minimum brightness, this minimum isn't just of, it's the lowest brightness the pixel can have while still showing detail, bellow that it's like underexposed film that doesn't have any texture. Above the maximum brightness, it's equivalent to overexposed film, again with no texture. When viewing your image in a waveform, you'll see the maximum and minimum brightness currently in your image and there are lots of ways to make adjustments to this brightness range and a Levels adjustment is one of the quickest and easiest. You can achieve similar results using a Curves Control, but this is even quicker in my view. Not all Levels controls give you access to the Output Levels as well, but let's look at that first. Here, I've got the minimum output and maximum output, which in this eight bit control zero to 255, just as we'd expect for a regular RGB image. Take a look at the lesson…

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