Accessory Power Mode Control for Camera Systems

The accessory apparatus differentiates between two types of power-saving modes: system-level power-saving mode (when camera body enters power-saving mode) and accessory-level power-saving mode (when interchangeable lens enters power-saving mode). By applying different power management strategies to different operational contexts, the system achieves local optimization - maintaining active state for quick user response while entering power-saving mode only when the camera body is idle, thus resolving the contradiction between power consumption and activation response.

The accessory apparatus dynamically adjusts its power mode based on real-time system state. It monitors whether the camera body is in active or power-saving mode, and accordingly switches between active mode and power-saving mode. This dynamic adaptation allows the system to maintain immediate response capability when needed (camera body active) while reducing power consumption during idle periods (camera body in power-saving mode), effectively resolving the contradiction between operational responsiveness and energy efficiency.

The accessory apparatus uses the camera body's power mode state as an intermediary indicator to determine its own power mode. Instead of directly following the interchangeable lens's power mode changes, it monitors the camera body's state - when the camera body is in active mode, the accessory remains active; when the camera body enters power-saving mode, the accessory enters power-saving mode. This intermediary approach filters out frequent mode changes from lens operations, reducing unnecessary mode switching and associated time losses while still achieving power savings during genuine idle periods.