1。 Angle problem, shooting angle is very important. Find the most suitable angle along the light. There is no shadow in the video, so don't backlight it.

2. There are not enough light sources. Make sure there are enough light sources to support shooting, so that there will be no shadows when shooting video.

3, the distance problem, adjust the shooting distance, eliminate the shadow produced by shooting.

4. Focus, be sure to shoot around the subject, let the light and particle flow converge a little, and avoid the shadow area.

5, post-processing problems, you can use software to eliminate unwanted video shadows.