What's the difference between a film camera and a HD camera?

From the cameraman's point of view, shooting with a high-definition camera is different from shooting with a film camera in the following aspects. 1. "What you see is what you get" and "What you see is what you get" When shooting with a film camera, neither the image observed by the cameraman from the camera's optical viewfinder nor the image observed by the video monitor is the final imaging effect, that is, what you see is what you get. In this case, the control of the picture depends entirely on the photographer, who will observe the scenery with a pair of "film eyes", which is based on the photographer's skillful grasp of the imaging performance and characteristics of the film. Shooting with a high-definition camera is just different. When the monitoring equipment has been calibrated, the image observed by the cameraman from the viewfinder is the final imaging effect, which is the so-called "what you see is what you get". This situation is obviously beneficial to the photographer's picture creation. According to the display in the monitor, the photographer can finally achieve the desired effect by adjusting the scene lighting or adjusting the menu settings of the machine. Second, the control and focusing of depth of field will bring different depth of field because of the different sizes of film and CCD, which brings challenges to photographers. In order to achieve the effect of small depth of field in film shooting, photographers often need to use the largest aperture when shooting, but even so, it is sometimes difficult to obtain a small enough depth of field. Large depth of field can cause focusing problems. Because the depth of field is too large, it is impossible to correctly judge whether the focal length is adjusted. Therefore, the position of CCD imaging plane is usually marked on high-definition cameras, which is beneficial for photographers to determine the focus with tape measure when shooting. Third, the problem of running out of light. Usually, the sensitivity of a high-definition camera is equivalent to 300 ASA to 600 ASA of the film sensitivity. In order to get a small depth of field, we must use a large aperture. It is reasonable to shoot with a high-definition camera with much less light. In fact, this is not absolute. If we simply consider the overall light intensity, it should be less than filming, but from the perspective of landscape modeling, the absolute amount of light used will not decrease. Fourth, the tailing phenomenon when panning From the shooting practice of some machines, when shooting a film with a high-definition camera, there was an obvious tailing phenomenon when using a panning lens. This is a purely technical problem, which I believe will be overcome in the end. In addition, unlike shooting ordinary TV programs with film cameras, making movies with high-definition cameras is not limited by the bandwidth of TV channels, and the contrast of pictures can be controlled in a wider range when creating pictures.