background luminance

例句：

1. 1.The camera's background luminance is very low, so it can't be used for photography.
   这台相机的背景亮度很低，所以不适合摄影。
2. 2.The new monitor has a high background luminance, which makes it easy to read text in the dark.
   这款新显示器背景亮度高，在黑暗中阅读文字变得很容易。
3. 3. The artist's work often features bright and vibrant background luminances.
   这位艺术家的作品经常以明亮的鲜艳背景光度为特点。