Computer screens, televisions, and video projectors all use additive color to produce colors by combining multiple colors—but printers achieve results by subtracting them. Unlike computer screens—which have pixels that shine—printers selectively hide parts of the white light reflecting from paper to reveal only the colors you want. In many ways, CMYK is the same principle as RGB but in reverse.
- [Instructor] Printers use subtractive color.…The presumption is that the paper's white…which contains all colors,…so selectively hiding the colors we don't want…reveals the ones we do.…It's a bit like putting a colored gel…over a white light bulb.…If the bulb is white, and you put a blue filter over it,…you just see the blue light.…That is, you'll see the blue part of the light…emitted by the light bulb.…The filter doesn't exactly modify the light.…It just hides everything except the color you want to see.…
This means that technically, the filter isn't actually blue.…It's every color except blue.…It's hiding every color except that one.…The cyan, magenta, yellow and black inks printers use…work on the same principle.…Though, of course, instead of covering up…a white light bulb, they cover up white paper.…You can interfere with this process by using…colored paper, of course,…though this would inevitably be a little bit hit and miss.…There's a black ink in addition to cyan, magenta and yellow,…because they discovered a good, clean black…
Get ready to remove the mystery behind terms you've encountered. If you work in a creative profession, this can enhance your command of the tools you use. Learn what a pixel really is, what color channels are, and what audio frequency is. Discover how color channels, bit depth, and video frame rates work. Find out the difference between codecs and file formats, and how compression is involved. By the end of this course, you'll know how to answer common client questions—like, whether a logo should be supplied in vector or bitmap form, and more.
Note: Motion graphics in this course were provided by Chelsea Parrish: chelseaparrish.com.
- What is a pixel?
- Aspect ratios
- Bit depth
- Alpha and transparency
- Light and color channels
- Color modes: RGB, YUV, CMYK
- Camera depth of field
- Chroma Key and Luma Key
- Blend modes
- Color wheels, vectorscopes, and waveforms
- Video compression and codecs
- Frame rates and timecode
- File formats
- Audio amplitude
- Capturing audio tone as frequency
- Audio timing using the phase
Skill Level Beginner
Learning Video Production and Editingwith Rob Garrott19m 25s Beginner
Video Foundations: Cameras and Shootingwith Anthony Q. Artis2h 58m Appropriate for all
Introduction to Video Dialogue Editingwith Ashley Kennedy3h 14m Appropriate for all
1. How Do Computers Think?
2. How Cameras and Computers Think about Color
3. The Language of Color
4. The Shape of Your Picture and the Speed of Your Video
5. Storing Everything (Codecs)
6. Color Wheels, Vectorscopes, and Waveforms
Understanding waveforms2m 39s
7. Making Changes
8. Audio Made Simple
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