"I mean, for instance, wide-angle lenses!" Hockney exclaimed as we stood that afternoon on the deck overlooking his pool. "After a while I bought a better camera and tried using a wide-angle lens because I wanted to record a whole room or an entire standing figure. But I hated the pictures I got. They seem extremely untrue. They depicted something you never actually saw. I wasn't just the lines bending in ways they never do when you look at the world. Rather it was the falsification - your eye doesn't ever see that much in one glance. It's not true to life." (chapter 1,4)
To escape this dilemma Hockney developed a collage technique: individual Polaroids arranged into compositions. On contrary to photography it takes time to see those pictures. You can look at them for a long time - but more importantly the pictures came closer to how we actually see: we see not all at once but rather in discrete, separate glimpses.