"contrast-detection": Indicates that autofocus is achieved by contrast detection. Contrast detection performs a focus scan to find the optimal position
"phase-detection": Indicates that autofocus is achieved by phase detection. Phase detection has the ability to achieve focus in many cases without a focus scan. Phase detection autofocus is typically less visually intrusive than contrast detection autofocus
Indicates a format's autofocus system.
"none": Indicates that autofocus is not available"contrast-detection": Indicates that autofocus is achieved by contrast detection. Contrast detection performs a focus scan to find the optimal position"phase-detection": Indicates that autofocus is achieved by phase detection. Phase detection has the ability to achieve focus in many cases without a focus scan. Phase detection autofocus is typically less visually intrusive than contrast detection autofocus