Back-button focusing basics: try it yourself

1. Assign Button

Set AF to rear button (not shutter); practise holding it.

2. Focus + Recompose

Lock focus with back button; recompose freely; no refocus.

3. Moving Subject

Track pet with back-button AF; release to stop tracking.

4. Switch Modes

Use back-button for single AF, then continuous AF; feel difference.

5. Muscle Memory

Spend 1 day using only back-button focus; build habit.