What exactly is a Lookup Table? A Lookup Table, or LUT, is a mathematical operation that states that one color now equals another color. This allows you to use something like a preset to color correct your images. In this movie, author Richard Harrington discusses what a LUT is used for and how it effects images.
- Let's start by exploring what exactly a lookup table is.…A lookup table, or LUT, is essentially dumb math.…Now, that may sound a bit strange,…but what it does is it does a mathematical operation.…It says, "This color now equals this color."…And what it does is it takes the mathematical value…for a particular hue or pixel…and remaps it to another value.…Now, that may sound a bit boring, but it is pretty cool.…It's essentially trying to encapsulate…some of the color correction theory that you apply,…or color-grading techniques,…and encapsulate that into an easy-to-use preset.…
Now, LUTs do have a few problems.…If you apply a lookup table to an image…that's not color corrected or varies greatly…from the original footage that the LUT was created with,…you might not get predictable results.…Oftentimes, lookup tables are applied…at the top of the stack, or as the last effect.…And then you'll weave in…a few color-correction effects before this.…But there are some techniques to do…to quickly automate the fixing of images.…
In this course, Rich Harrington demystifies lookup tables (LUTs) and shows how to use them with Photoshop, Lightroom, and other Adobe CC applications. He also shows how to use gradient maps—where tints are based on the luminance values in the image—to add creative color and noise to images, and how to organize, store, and share these assets with other Creative Cloud programs and other photo and video professionals.
- Understanding the role of LUTS
- Working with LUTs and Looks in Premiere Pro
- Creating custom LUTs
- Cross-application workflows
- Managing your LUT library and presets