Nikon D810 - Manual (Page 275)

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To delete the photograph displayed in full-frame playback or
highlighted in the thumbnail list, press the O (Q) button. To
delete multiple selected photographs or all photographs in the
current playback folder, use the Delete option in the playback
menu. Once deleted, photographs can not be recovered. Note
that pictures that are protected or hidden can not be deleted.
Full-Frame and Thumbnail Playback
Press the O (Q) button to delete the current photograph.
1
Press the O (Q) button.
A confirmation dialog will be
displayed.
2
Press the O (Q) button again.
To delete the photograph, press the
O (Q) button. To exit without
deleting the photograph, press the
K button.
Deleting Photographs
A
See Also
The After delete option in the playback menu determines whether
the next image or the previous image is displayed after an image is
deleted (0 287).
O
(Q) button
O
(Q) button