How to Restore Canon EOS 6D Default Settings
Sometimes you need to do some spring cleaning and wipe your Canon clean. If you have enabled more settings on your camera than you care to deal with, no longer use, or even know about, you can restore camera settings to factory defaults.
This wipes out all your menu changes, your custom menu, and any picture styles you’ve registered or customized. So think twice before doing this because you will have lots of re-setting to do otherwise. To restore your camera settings to the factory default:
Press the Menu button.
The previously used menu displays.
Use the Multi-controller to navigate to the Camera Settings 4 tab.
Use the Multi-controller or the Quick Control dial to highlight Clear All Camera Settings and then press Set.
A dialog box appears, asking you to confirm that you want to clear all settings. Make sure you have thought about this and have any important material backed up elsewhere.
Use the Multi-controller or the Quick Control dial to highlight OK and then press Set.
A dialog box appears, telling you the camera is busy. When it stops, the camera settings have been cleared and your spring cleaning is off to a good start.