I do think books are different to films. With books/literature, your imagination defines the limits of what you will see. Even if a scene is intended to be very graphic, if you're not open to it, you either skip past it, or your imagination doesn't take you there and limits the scene to a more muted scene that you can cope with.
Whereas, with film, you are seeing someone else's imagination. You can't avoid it, it's someone else's pace, someone else's tempo, someone else's atmosphere, their tension, you can't escape it, it's all their, shoved on the screen and spilling out of the speakers. All you can do is shove a pillow in front of your eyes and fingers in your ears.