Focusing the Pentax 645D with camera focus assist

Just posted in my review of the Pentax 645D in DAP is a new page on the Pentax-A focus assist mechanism. It is not wise to assume that the focus assist/confirmation in the viewfinder is anywhere near accurate. I can focus more accurately by eye.

Maple in January. One of many test shots
Pentax 645D + Pentax-A 120mm f/4