The Custom Settings Menu
Unlike the Photo Shooting and Movie Shooting menu options, which you are likely to modify frequently as your picture-taking environment changes, Custom Settings are slightly more stable sets of preferences that let you tailor the behavior of your camera in a variety of different ways for longer-term use. Some options are minor tweaks useful for specific shooting situations, or make the camera more convenient to use. Perhaps you’d like to assign a frequently used feature to the Fn button, or turn on the viewfinder grid display to make it easier to align vertical or horizontal shapes.
Best of all are the settings that improve the way the D850 operates. Custom Setting b7, for example, provides a way to fine-tune the ...