2. D850 Online Manual
3. More About Playback
4. Protecting Photographs from Deletion

In full-frame, zoom, and thumbnail playback, the L (Z/Q) button can be used to protect photographs from accidental deletion. Protected files cannot be deleted using the O (Q) button or the Delete option in the playback menu. Note that protected images will be deleted when the memory card is formatted (0 Format Memory Card).

To protect a photograph:

1. Select an image.

   Display the image in full-frame playback or playback zoom or highlight it in the thumbnail list.

2. Press the L (Z/Q) button.

   The photograph will be marked with a P icon. To remove protection from the photograph so that it can be deleted, display the photograph or highlight it in the thumbnail list and then press the L (Z/Q) button.

   

   L (Z/Q) button