116 Menu GuideThis option is available when an optional MB-D17 multi-powerbattery pack is attached. Choose the functions assigned toMB-D17 controls, whether used individually or in combinationwith the command dials.❚❚ Fn buttonChoose the function performed by pressing the Fn button on thebattery pack. See the “Press” section for Custom Setting f1(Custom control assignment) on page 97 for more information.f10: Assign MB-D17 ButtonsG button ➜ A Custom Settings menuMB-D17 Fn button MB-D17 AF-ON buttonMB-D17 multi selectorA Preset focus pointq Previewr FV lockD AE lock (Reset on release)E AE lock (Hold)4 + NEF (RAW)L Matrix meteringM Center-weighted meteringN Spot meteringt Highlight-weighted meteringb Viewfinder grid display! Viewfinder virtual horizon% MY MENU3 Access top item in MY MENUK PlaybackNone