I need to print the screen shots out and study them to remember the patterns. My glass is all f/2.8 or faster and f/5.6 with a tele. That's a real small window between f/5.6 and f/8. You're not likely to realize you're in it when you are, let alone remember the pattern for it as you're concentrating on a BIF.
Scott Chapin Powder Springs, GA, USA Nikonians Team Member