While histograms don't give you controls to adjust your media, they're a favorite for color and brightness adjustments because they neatly sum up the spread of light and color in a frame. This video explains how to interpret a histogram—a skill you can use both in video production and post production, and in graphic design and photo editing work.
- [Instructor] Histograms are another way to gauge…the amount of light and color in an image.…Without telling you anything about…where the pixels are, they give you a sense…of just how many pixels have values at different levels.…Here we can see a pretty good spread of pixels,…with the six main colors we speak about,…red, green, blue, yellow, cyan, and magenta all displayed.…Where all colors are equal, we get white,…or more precisely, different levels of gray.…Histograms are great for getting a sense…of the overall contrast ratio of your image.…
It's easy to see a problem with the…range of highlights and shadows,…and to get a sense of whether there's a problem…with the distribution of light levels.…In many ways, you'll get the same kind of information…from careful examination of a waveform,…but a waveform can have quite subtle markings.…Histograms represent the data…rather than trying to give a nuanced display.…Again, histograms have no direct relationship…between the location of the pixels in the image…and the display in the graph,…
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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