It's like an astronaut on the Moon looking at a circular fill light with a diameter of 13 centimeters on Earth.

这就像月球上的宇航员看着地球上直径 13 厘米的圆形补光灯。

You can also light up the glyph while you're using the camera, to act as a fill light, which is sort of neat.

您还可以在使用相机时点亮字形，充当补光灯， 这有点简洁。