Nikon D5200: Assign a Duty to the Function Button
Tucked away on the left-front side of the Nikon D5200, just under the Flash button, the Function (Fn) button is set by default to provide quick access to the ISO setting: While pressing the button, you rotate the Command dial to adjust the setting. But if you don’t use that function often, you may want to assign some other purpose to the button.
You establish the button’s behavior via the Assign Fn Button option, found on the Controls submenu of the Custom Setting menu and shown on the left. After highlighting the option, press OK to display the screen shown on the right in the figure. Here’s a quick description of the possible settings.
Image Quality/Size: Pressing the Fn button while turning the Command dial cycles through the available Image Quality and Image Size settings.
ISO Sensitivity: Pressing the button while turning the Command dial changes the ISO setting.
White Balance: Pressing the button while turning the Command dial cycles through the available White Balance settings (available only when the Mode dial is set to P, S, A, or M).
Active D-Lighting: Pressing the button while turning the Command dial changes the Active D-Lighting setting (again, only in P, S, A, and M exposure modes).
HDR mode: Pressing the button while rotating the Command dial adjust the HDR setting. See Chapter 7 for more about HDR.
*+ NEF (RAW): This setting relates to the Image Quality option. If you set that option to JPEG Basic, Fine, or Normal and then press the Fn button, the camera records two copies of the next picture you shoot: a JPEG version plus a second image in the NEF format. Note that this featuer doesn’t work when you shoot in the Effects mode and select Night Vision, Color Sketch, Miniature Effect, or Selective Color as the effect.
Auto bracketing: Pressing the Fn button while turning the Command dial lets you select a bracketing increment for AEB (automatic exposure bracketing) or white-balance bracketing. For ADL (Active D-Lighting) bracketing, you can use the button and Command dial to turn bracketing on and off. Bracketing is possible only in the P, S, A, or M exposure mode.
AF-area mode: Pressing the button while turning the Command dial changes the AF-area mode, an autofocusing option.
Live View: The button takes the same role as the Live View switch: Just press the button to toggle Live View on and off.
AE/AF options: The final five options on the menu enable you to set the Fn button to perform the same actions you can assign to the AE-L/AF-L button. See the preceding section for a description of each.
After selecting the function you want to assign, press OK to lock in your choice.