How many lumens is a movie camera

Your statement is a bit inappropriate or not clearly expressed. There is no such parameter as lumens in the movie machine itself. We generally speak of lumens as the brightness of light.

When we make a movie, we want to expose the scene as we need to, but get the best picture quality, there is a question of how much light brightness is needed, and what determines the exposure of the movie camera includes the aperture of the lens, the shutter, and the sensitivity of the film. It is on this premise that we decide how much light to use. Or if we can't change the brightness of the light source, we have to back off and change the aperture. Shutter or sensitivity.

So what is needed to make a movie is constantly changing depending on the subject and the effect we are shooting. In order to ensure the best picture quality, it is generally recommended that no less than 100 lumens.