Camera Body Roll Correction Range Adjustment for Interchangeable Lens Coordination
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Solution Overview
Problem
Existing camera systems with interchangeable lenses face challenges in effectively coordinating camera shake correction between the lens and camera body, leading to suboptimal image blur correction across various rotation directions, particularly in Roll, Pitch, and Yaw axes, due to differing capabilities and correction ranges.
Innovation Solution
A camera system with a blur correction unit that determines the capabilities of both the interchangeable lens and camera body to set appropriate correction ranges and ratios, allowing for coordinated blur correction in multiple directions, ensuring optimal image stabilization by adjusting the Roll, Pitch, and Yaw correction ranges based on the lens's and body's capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If both the interchangeable lens and camera body are provided with blur correction functions, then the overall blur correction capability is improved, but the coordination between lens and body correction becomes complex and difficult to optimize
Solution Approach 1:
The system dynamically adjusts the correction range in Roll directions based on the operational status of Pitch-Yaw correction. When Pitch-Yaw correction is active, the Roll correction range is expanded to a second range that is equal to or longer than the first range. This dynamic adjustment optimizes the coordination between lens and body correction functions without requiring complex manual configuration.
Solution Approach 2:
The patent changes the parameter of correction range length based on the operational mode. The Roll correction range is set to a first range when Pitch-Yaw correction is unavailable, and switched to a second range (equal to or longer than the first) when Pitch-Yaw correction is available. This parameter change simplifies the coordination logic while maximizing correction effectiveness.
2Reliability
If the Roll correction range is extended to a second range when Pitch-Yaw correction is available, then the overall stabilization performance is improved, but the control logic becomes more complex
Solution Approach 1:
The system pre-establishes two correction ranges for Roll directions before operation begins. The first range is set for scenarios without Pitch-Yaw correction, and the second range is prepared for scenarios with Pitch-Yaw correction. This preliminary setup simplifies real-time control logic by eliminating the need for complex calculations during operation.
Solution Approach 2:
The control system dynamically switches between the first and second Roll correction ranges based on the detection of Pitch-Yaw correction availability. This dynamic switching approach simplifies control logic compared to continuously calculating optimal ranges, while still achieving optimized stabilization performance.
3Adaptability or versatility
If the camera system adjusts correction ranges based on lens and body capabilities, then the adaptability to different shooting scenarios is improved, but the determination and setting process becomes more complex
Solution Approach 1:
The patent applies different correction ranges to different rotational directions based on local needs. The Roll correction range is adjusted to a second range specifically when Pitch-Yaw correction is available, while Pitch and Yaw corrections operate independently. This localized optimization improves adaptability without requiring complete reconfiguration of the entire correction system.
Solution Approach 2:
The determination unit checks for the presence of Pitch-Yaw correction capability, and based on this single determination, the system universally applies the appropriate Roll correction range. This multi-functional approach allows the system to adapt to different lens and body configurations without requiring separate determination processes for each correction axis.
Data Source
AI summary
A camera system including an interchangeable lens and a camera body, in which the camera body includes: a Roll blur correction range setting unit that sets a blur correction range in Roll directions of the camera body to be θ1 when the interchangeable lens mounted on the camera body cannot perform blur correction (in the Pitch directions and the Yaw directions) or that sets the range to be θ2 (≥θ1) when the interchangeable lens can perform blur correction; a Pitch-Yaw blur correction range setting unit that sets blur correction ranges in the Pitch and Yaw directions of the camera on the basis of the set blur correction range in the Roll direction; and a blur correction ratio calculation unit that calculates a blur correction ratio of each of the interchangeable lens and the camera body when both of them perform blur correction.