Many online celebrities use SLR cameras to shoot videos. Why not use a DV camera?

The principle of DV camera is to use the magnetic head mounted on the high-speed rotating drum to scan the DV tape and record the relevant image information. When playing back video, the video signal is restored after scanning the previously recorded information on the DV tape with a magnetic head. Because it needs many precise mechanical parts to participate in the working process, it belongs to electromechanical integration. Mechanical things will inevitably be affected by life and failure rate, and will gradually be eliminated by new technologies. Although DV machines that record information with hard disks were produced later, there are fewer and fewer machines that use magnetic drums. Modern video cameras use memory cards to record information in full digital mode. The recording and recovery of information do not require mechanical parts. All the cameras produced now have camera function, which can be recorded with memory cards and uploaded to the network in time through WIFI. Its cost is much lower than that of professional cameras, and it can be used as a small camera, so it is loved and adopted by everyone. Nowadays, netizens can even complete all the work of shooting, recording and uploading with their mobile phones. It also reflects the rapid upgrading of science and technology.