Nikon D3300 - Manual (Page 57)

37 “Point-and-Shoot” Modes ( i and j)
Movies can be recorded in live view mode.
1
Press the a button.
The view through the lens is displayed
in the monitor.
2
Ready the camera.
Hold the handgrip in your right hand and cradle the camera
body or lens with your left.
3
Focus.
Press the shutter-release
button halfway to focus.
Recording Movies
a button
Focus point