From the course: Photoshop for Video Editors: Core Skills
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Understanding bit depth
From the course: Photoshop for Video Editors: Core Skills
Understanding bit depth
- Besides resolution in an image there's another way to measure the amount of data and that's bit depth. Bit depth is referring to how much information is used to describe the color of an image. When you capture an image on a DSLR or mirrorless camera, it may use between eight and 14 bits of information for each color channel. As you increase this it exponentially increases the amount of data. So 8-bit information means two to the eighth power or 256 levels of detail. But when you go up to the next level of 10-bit, now all of a sudden you go to 1024 levels of detail. Now that sounds like a decent sized jump, but keep in mind that again, when you start multiplying the information across red, green, and blue channels, that 1024 times 1024 times 1024 equals billions of colors versus 8-bit which really only uses about 1.6 million colors. So it gets a little bit interesting. Here we've got the same graphic opened three…
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