The Speed if something is moving. Is it a fast move? Like the one on the image where Hasse remove the boots from his mothers foot.
Is it a slow move? Maybe you might think that the move is not important but even a small move can tell the story.
You have to deal with the Speed of reading as well. Do you want the reading to move smoth or maybe be like a labyrinth? If it´s action you often want to have a higher speed of reading than if it a more sensitive scene.