The WYSIWYG light compensation effect is easy to use and convenient. It can be operated even without the basis of photographic light layout, and there is no need to wait for a call back. It is more convenient to capture. We cannot know what the flash will look like before pressing the shutter, and there is a waiting time of 0.2 to 10 seconds for a return call.The light quality is softer. In terms of light quality, the brightness of the light source can be adjusted at any time. The light source of the fill light is softer than the flash light, and there is even no need to install a soft light cover or soft light umbrella accessories during shooting. The output power of the light source of the flashlight is high, and the light is mostly hard light. Therefore, in portrait photography, the flashlight often uses a flashing light (the output of the lamp head towards the white ceiling and wall is considered a flashing light). Do not directly flash for children under one year old, as it may affect their eyes.Focusing can still be easily achieved under low illumination. In low light environments, using a fill light can improve the brightness of the ambient light by continuously filling in light, making it easier for the camera to complete the focusing task, without the phenomenon of the lens "pulling the wind box" due to insufficient light during focusing like using a flash.