本教材是由Lynda.com机构最新出品的After Effects最新表达式高级教程。

Lynda.com 出品的时长1小时35分钟的 After Effects系列学习第9部：表达式的运用 视频教程。After Effects众多功能中最强大，但未被充分利用的是表达式，此功能可以把代码应用在动画层属性上，比较关键帧在时间轴中的每个值。表达式的优点是可以使多参数和层能够遵循主层引导或控制效果的能力，使其更容易的支配复杂动画，迅速适应客户的变更。教学由Chris Meye演示了如何使用After Effects创建简单而有十分有用的表达式能够运用到各种项目上的大部分工作。本教程附带练习文件。

Lynda.com After Effects Apprentice 09 Expressions | 1.3 Gb

One of the most powerful but underused features in After Effects is expressions, which can be used to animate layer properties with code, as compared to explicitly keyframing every value in

the Timeline. One of the strengths of expressions is the ability to have multiple parameters and layers follow the lead of a master layer or controller effect, making it much easier to coordinate complex animations and quickly accommodate client changes. In this introduction, Chris Meyer shows how to let After Effects do most of the work by creating simple but very useful expressions that can be put to work on a wide variety of jobs.

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