I am a little confused about how to interpret the "Show Focus Area" option in NC. I wanted to analyze the reasons for out-of-focus images of runners in a triathlon shot earlier today. Some OOF shots did not show the red box at all, and I assumed this was because the camera (D70) had not acquired focus (I was shooting AF-C/Dynamic Area in Continuous mode for most of them). However, some shots that did show the red focus area were actually OOF in that spot but had other areas that were in sharp focus. Am I missing something here?