 The Autofocus Mode option under the Function menu offers Single-shot AF (AF-S), Automatic AF (AF-A), and Continuous AF (AF-C) settings.Single-shot AF acquires and locks focus when the shutter button is half-pressed, while Continuous AF mode constantly adjusts focus while the shutter button is half-pressed.The Automatic AF setting will lock focus on a still subject, but will switch to Continuous AF mode if the subject moves.