As usual with your post's sir, I think this is a fascinating idea.

The question is, could the silver in the film be read by a magnetic head, akin to magnetic tape?

From a historical perspective, how did the earliest "electronic" cameras operate? Surely some of you have seen this....

Your propsal raises an interesting question.... what ways are there to record an image, in a camera, electronically, without it being digital? Afterall, video was analog for 50 years or so, and recorded onto magnetic tape.

An interetsing proposition as usual Umut!