When I or other person ask about problems with photofocus, blip page etc, they tell us to use the imaginary X method like is explained in the book. But I have some qustions about how to apply correctly this method:
1. "How" you need to visualize the X in the page ? is black, white, transparent formed by the words ?
2. Is a big X that fills all the paper, or is an X that fill all the text, and don't go far away the text ?
3. How you know that you has the correct focus ? what is what you see ?
thanks
