你用这个技巧的时候同样会使用长时间曝光，所以你需要一个三脚架。
You'll use this technique in conjunction with using longer exposures in most situations, so you'll need your tripod.
整本书分为三大主题：曝光的定义，特殊技巧，及胶片相机和数码相机的讨论。
The book is divided into these three topics, as well defining exposure, special techniques, and a discussion of film vs. digital.
当你准备好时，你可能想学习更进阶的技巧，结合TTL闪光灯使用闪光灯曝光补偿和一般曝光补偿。
When you're ready, you might want to learn more advanced techniques using flash Exposure Compensation and general Exposure Compensation controls in conjunction with TTL flash.
应用推荐