Nikon D5300 - Manual (Page 76)

56 More on Photography
2
Lock focus.
AF-A and AF-C focus modes : With the shutter-release
button pressed halfway (q), press the A (L)
button (w) to lock focus. Focus will remain
locked while the
A (L) button is pressed, even if
you later remove your finger from the shutter-
release button.
AF-S focus mode : Focus will lock automatically when the in-focus indicator
appears, and remain locked until you remove your finger from the shutter-
release button. Focus can also be locked by pressing the
A (L) button (see
above).
3
Recompose the photograph and shoot.
Focus will remain locked between shots if you
keep the shutter-release button pressed halfway
(AF-S) or keep the
A (L) button pressed,
allowing several photographs in succession to be
taken at the same focus setting.
Do not change the distance between the camera and the subject while focus
lock is in effect. If the subject moves, focus again at the new distance.
A
Autoexposure Lock
Pressing the A (L) button in Step 2 also locks exposure (0 91).
Shutter-release button
A (L) button