No, I'm not posting the text here, but I will tell you that I'm working on some material that deals with visual perception and photographs. This is one of the more interesting chapters to research, and it's flavoring some other parts of the book.

Expressive photography relies heavily on getting the photographer's vision into the image, as opposed to simply recording the moment in time. That vision can be brought out in myriad ways, and involves more than simply knowing how to work a camera. By choosing locations, exposure, points of view, and cropping, the photographer can manipulate reality, either enhancing it or lying about it, all without any editing.

So, this chapter on which I am working discusses how lighting, color, angle and many other factors help images tell a story. Since this is a book on using Photoshop, I'm also dealing with editing images to take advantage of perception and emotional response, as well as visual cues that are based in both culture and physiology.

There is quite a bit of information about this on Teh IntarWebz, and it's... um... eye-opening.