Why were there cameras in previous concerts?

According to Baidu Encyclopedia query, the reasons why previous concerts had cameras are as follows:

1. Record the performance site: The camera can record the images and scenes of the performance site, allowing the audience to You can still review and enjoy the performance after the concert.

2. Improve the performance effect: Through camera shooting and projection, the audience can see a larger picture and clearer scene at the performance site, improving the performance effect and the audience's experience.

3. Capture wonderful moments: The camera can capture wonderful moments during the performance, such as the singer's performance, dance, lighting, etc., so that the audience can still review and appreciate it after the concert is over.