Single Autofocus
Autofocus mode where the camera focuses once upon half-pressing the shutter button and locks focus until the image is captured. Ideal for stationary subjects. Commonly labeled as AF-S (Autofocus Single) or One-Shot AF.
Key Characteristics
- Focuses only once; does not adjust for moving subjects
- Requires subject to be stationary or photographer to recompose after focus
- Provides highest accuracy for static scenes (landscapes, portraits, still life)
Fujifilm Implementation
- Designated as AF-S in Fujifilm camera menus
- Optimized via Fujifilm Autofocus Setup Guide:
- Selects Autofocus Area Mode (Center/Zone/Wide) based on subject
- Adjusts Autofocus Speed for balance between responsiveness and precision
- Configures Focus Priority to prevent shutter release without focus
Known Issues & Overrides
- AF+MF Interaction: On Fujifilm cameras, enabling AF+MF (Auto Focus + Manual Focus) can override Focus Priority settings, potentially causing blurry photos if the user manually adjusts focus while the shutter is half-pressed Fujifilm AF+MF overrides Focus Priority, causing blurry photos.
- Verify Release/Focus Priority settings when using AF-S to ensure focus lock is maintained as intended.