Quote Originally Posted by neuroanatomist
A common question is, "What does the relative spread of AF points look like?"

John, Wow, Great info. The way I understood the literature, the 1DX had a wider spread of AF points (I was hoping it would be enough to cover the "rule of thirds" intersections-----another dissapointment)-----By the way, the graphic (and explanation) is outstanding--I have never thought of saving a PS file as a PDF and have it retain the layers. I love this forum