Join Mark Christiansen for an in-depth discussion in this video Straddle compositions with an expression control, part of After Effects Compositing: 2 Matching Foreground to Background.
…In this lesson I'm going to show you how to set up a simple…expression control that can be used to dial in a value anywhere in your project.…In this case it's in a completely separate column.…So to start from scratch I'll actually delete this.…And you'll see something alarming, you'll see an expressions error.…Well, there's no reason to be alarmed.…I'll just clear that.…The error told me where it was located, and I happen to know it's in this precomp.…So here you see opacity and there's a little warning sign there.…I'll just clear that out.…Holding down the Option key or Alt on Windows, I click on the stopwatch.…
That toggles expressions on and off for that property.…And I'll show you the basics of how this works right here.…To begin, you set yourself an expression control.…So, among the effects built into After Effects,…are expression controls, and there are several of them.…Slider control is the most widely used.…This is just a slider, it doesn't actually do anything until you wire it up.…To do that, I'll again, Option+click on Opacity.…
This course was created by Mark Christiansen. We're honored to host this training in our library.
- Matching color in black and white
- Matching levels with proportions
- Desaturating with tint
- Creating depth of field
- Reducing or removing grain
Skill Level Intermediate
VFX Techniques: Tracking Objects onto a Facewith Lee Lanier2h 42m Intermediate
1. Compositing Is Matching
2. More Complex Compositing
3. Introducing Depth
4. Organize Projects for VFX
5. Befriend Noise and Grain
- Mark as unwatched
- Mark all as unwatched
Are you sure you want to mark all the videos in this course as unwatched?
This will not affect your course history, your reports, or your certificates of completion for this course.Cancel
Take notes with your new membership!
Type in the entry box, then click Enter to save your note.
1:30Press on any video thumbnail to jump immediately to the timecode shown.
Notes are saved with you account but can also be exported as plain text, MS Word, PDF, Google Doc, or Evernote.