Why can't a TV camera or DV produce the effect of a movie?

The difference of the scenery itself. Without light, the best picture is just darkness. The same scenery will be obviously different in different lighting environments. This is a question about lighting, which has been answered professionally before. Different recording methods. There are many differences between the combination of "film camera and film" and TV camera, some of which can be compensated by technical means, such as photoelectric response and particle noise, but some of them are essential differences, such as the difference between continuous and discrete, and the difference of spectral characteristics, and these processes are irreversible. As for film and television, both of them can be regarded as the product of the combination of technology and art. For traditional film and television, the difference of the above technical means is one of the main reasons for the difference of pictures. With the overall digitalization of movies (photography, production and projection), TV and movies are gradually merging in technology. Therefore, compared with the differences in creative intention, artistic expression, technological process (and investment), the difference between DV camera and film is obviously not the main factor affecting the subjective impression of TV movie pictures today. After all, whether it is film or television, technology is for the art.