Nikon D500 User Manual page 164

2
Select exposure mode M.
Press the I button and rotate the main command dial until
M is displayed in the control panel.
I button Main command
3
Choose a shutter speed.
While the exposure meters are on,
rotate the main command dial to
choose a shutter speed of Bulb
(A) or Time (%). The exposure
indicators do not appear when Bulb
(A) or Time (%) is selected.
4
Open the shutter.
Bulb: After focusing, press the shutter-release button on the
camera or optional remote cord or wireless remote controller
all the way down. Keep the shutter-release button pressed
until the exposure is complete.
Time: Press the shutter-release button all the way down.
138
dial
Control panel
Bulb
Time