I may be dense, but I cannot figure out the benefit of the AF start button when auto focus is achieved (and Locked if desired) when shutter release button is depressed. I also feel much better job could have been done on editing the F100 instruction manual. There are may areas where the meaning or instruction are not very clear. I have been owner of N90/N90s and N70, this is the first time I have ever had difficulty understanding how to use each of these fine cameras. On the positive side the camera is a joy to hold and work with, once you spend many hours of studying and going back and forth in the manual. Warren Kneis, Hurst, TX
