Nikon D3300 User Manual page 271

❚❚ Time
1
Rotate the mode dial to M.
2
Choose the shutter speed.
Rotate the command dial left to
choose a shutter speed of "Time" (&).
3
Open the shutter.
After focusing, press the shutter-release button on the
camera or optional remote control, remote cord, or wireless
remote controller all the way down.
112 P, S, A, and M Modes
Mode dial
Command dial