Canon EOS Rebel T6i EF-S 18-55mm IS STM Lens Kit Instruction Manual - Page 55

3 Menu Operations  In step 2, you can also turn the dial to select a menu tab.  In steps 2 to 5, you can also use the LCD monitor's touch screen (p.56).  The explanation of menu functions hereinafter assumes that you have pressed the button to display the menu screen.  To cancel, press the button.  For details about each menu item, see page 362. Dimmed Menu Items Example: When [Multi Shot Noise Reduction] is set Dimmed menu items cannot be set. The menu item is dimmed if another function setting is overriding it. You can see the overriding function by selecting the dimmed menu item and pressing . If you cancel the overriding function's setting, the dimmed menu item will become settable. Some dimmed menu items will not show the overriding function. With [Clear all camera settings] under [54: Clear settings], you can reset the menu functions to the default settings (p.267). 55