For the most part, I have no issues visualizing the books I read. Though it's less like a movie and more of pictures/images actualizing the storyline before my eyes without need of additional equipment. My realized stories translate into life not played out over a screen, but real life. The life of those characters and their everyday reality. Whenever an image is murky or I stumble upon text I have problems computing to pictures, I reference other books or look up on the internet.
What about you?