How wide and high is the area you can PhotoRead? If you read a newspaper, can you photofocus in the middle and still "see" everything or do you have to put it further away from you? What is the biggest area you can PhotoRead at normal reading distance (40 centimeters)?
:-) Okay, so can you read interesting things that are for instance 60 x 40 centimeter or 120 x 80 centimeter without putting it at a longer distance than when you normally read?
Think for a min., since you were a little kid whenever you saw letters, you consiously tried to read them. The idea to keeping the blurry is so that you wont actually 'try' to focus on them just because you have formed the habit.
Anything that you can see normally, and perpihirally, aka being able to see anything at all:you can do PhotoFocus on. It does not matter if the book is gigantic in its pages' size. Anything within your field of vision can be done using PhotoFocus.