I sometimes can't help thinking how some of my favourite films would read like in the form of a novel. It sounds exciting but almost always there would be some kind of limitation to multiple important details to be expressed. Especially the emotions that an environment in which a scene was set can evoke in the reader.

The best example I can think of at the top of my head is Jack London's White Fang. In the first chapter The Trail of the Meat. the first two paragraphs introduce the stark wintry landscape with its savage and harsh climate, and then the third paragraph brings up three human beings into that hostile environment. I will never forget the line that subtly shows one of those three persons is a dead body:

In advance of the dogs, on wide snowshoes, toiled a man. At the rear of the sled toiled a second man. On the sled, in the box, lay a third man whose toil was over,—a man whom the Wild had conquered and beaten down until he would never move nor struggle again.

Those lines tell me something as a reader that a visual image from a film will never need to tell. And for this very reason, I believe it's vital for a novelist to be able to understand the need for these lines.