Welcome, in this lesson we will go over the basic of color correction by using the tools found in Shake to correct and remove unwanted color values in your images.
To get started import the floor.jpg into Shake.
Footage Analysis:
After you imported the floor.jpg what you get is an image of a tile floor that clearly has some unwanted color values.
The areas that are suppose to be white are instead an orange-ish color. An effect that is created when the camera is not correctly white-balanced or due to the lighting of the scene.
Light and Color
Before we start color correcting let’s cover how light and color work so you can get a better understanding of what you’re going to be doing.
What is color? To simplify, color is when light reflects off an object and into our eyes. If all the wavelengths are reflected then the object appears white, and when all the wavelengths are absorbed the object looks black.
Before we start color correcting let’s cover how light and color work so you can get a better understanding of what you’re going to be doing.
What is color? To simplify, color is when light reflects off an object and into our eyes. If all the wavelengths are reflected then the object appears white, and when all the wavelengths are absorbed the object looks black.
So if an object looks red that means it is reflecting the red
wavelength and absorbing all of the other wavelengths.
While working in Shake you are using the RGB color
space, a color space that imitates how light works using the three
primary colors: Red, Green, and Blue.
For example if we were to add 100% of all three primary colors we
would get white.
When we take those values down to 0 we get black.
Light Absorbers!
The CYM color space (Cyan, Yellow, and Magenta) is the opposite of the RGB color space, instead of reflecting light they absorb it.
So what does this mean? It means that if you add all three colors together you get black, and if you remove them completely you get white.
Think about your printer, you start with a white piece of paper right?
If you add more ink you start getting closer to black, well almost... In digital space the CYM colors together will give you pure black, but not with ink.
That’s why they added the “K” or black ink to CYMK; using a printer CYM together will only give you a dark muddy brown color, by adding Black to the printers you can pure black values.
The CYM color space (Cyan, Yellow, and Magenta) is the opposite of the RGB color space, instead of reflecting light they absorb it.
So what does this mean? It means that if you add all three colors together you get black, and if you remove them completely you get white.
Think about your printer, you start with a white piece of paper right?
If you add more ink you start getting closer to black, well almost... In digital space the CYM colors together will give you pure black, but not with ink.
That’s why they added the “K” or black ink to CYMK; using a printer CYM together will only give you a dark muddy brown color, by adding Black to the printers you can pure black values.
So why the science lesson? Well if we understand how light and color works we can use this theory when color correcting.
click here to continue on to part 2.