然后你再次拍下照片，闪光灯发出刚够照亮拍摄主体的闪光，这一次的照片要好多了，你可以同时看清主体和背景。
This time the flash fires just the right amount of light to "fill-in" the subject with the flash produced light. Now you have a rather nice shot where you can see the subject and the background.
拍照小技巧：给你的构图分层——也就是说，给拍摄主体添上多种元素，例如前景和背景元素等。
Photo tip: Add layers to your composition-that is, multiple elements beyond the main subject, such as foreground and background elements.
背景的反射光可能会造成画面出现死黑区域，为避免出现这种情况，应在被摄主体周围布满灯、柔光罩和反光板，事实上起到柔光棚的作用。
Reflections from the background can reproduce as black dead zones. To prevent them, build a de facto light tent around your subject by completely surrounding it with lights, diffusers, and reflectors.
应用推荐