Nikon D780 DSLR Camera (Body Only) - Manual (Page 305)

259 Shooting Settings
5
Frame a photograph, focus, and shoot.
• The camera takes two exposures when the shutter-release
button is pressed all the way down. Flashing “
1 ” and
“ 2 ” indicators will appear respectively in the control
panel and viewfinder while the images are combined. No
pictures can be taken until recording is complete.
• If [ On (series) ] is selected, HDR will only turn off when [ Off ]
is selected for HDR mode; if [ On (single photo) ] is selected,
HDR turns off automatically after the photograph is taken.
D NEF (RAW)
HDR photographs taken when an NEF (RAW) or NEF (RAW) + JPEG option
is selected for image quality will be recorded in JPEG format.