What dv cameras shoot without tape is also very clear. Why can't this HD dv camera use tape instead of camera? What's the difference between them?

Both cameras and video cameras are used to shoot videos, but there are obvious differences between them, and the storage methods of images are obviously different. Cameras record images with photographic film, and cameras record images with magnetic tape or hard disk or memory card. Recording video on tape has a feature. No matter how many pauses are made in the shooting process, the video file exported from the tape to the computer is a continuous and complete file, while the camera with hard disk and memory card as the storage carrier will create a separate video file every pause in the shooting process. As for why we shoot professional videos with cassette cameras, in my opinion, it is mainly because the video tapes have uniform specifications, and a standard video tape can be used on any tape recorder. However, it is not so easy to record DV images using hard disk or memory card. First of all, the hard disk on DV can't be disassembled casually, and the specifications of memory cards used on DV are not uniform, so it is difficult to use them interchangeably on various models of DV. Most importantly, the storage capacity of a camera recording video on tape is unlimited. You can prepare many tapes for recording, but the storage capacity of the hard disk or memory card DV camera is limited.