Everytime we press the record trigger of the camcorder, visual and sound will also recorded onto the video tape. If we do not bring or forget to bring extra microphone, come close to the subject that we want to record on the tape. If we do not do so, the sound of the subject will be not recorded because of the distance. Or the sound we were recorded will be not clear or could not be listern. The example is when we are interview someone very important.
