Pete's probably better suited to answer this, but I think I'll take a crack at it.
The ability to Photo Read is based on your direct eye/mind connection; the ability for your other-than-conscious mind to absorb everything in your visual field, process it in a way and with a speed your conscious mind can't, and then make it available to you(your conscious mind).
Photo Reading works on all written material. It actually works on everything you see, including what's in your periphery. If you can, take a look through the Photo Reading book and you'll see a ton of success stories that don't always include the written word.
I hope that sums it up. Anyone from LSC care to add to it? How'd I do?
