Camera Body Rolling Direction Blur Correction Allocation
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Solution Overview
Problem
Existing camera systems face challenges in effectively correcting image blur caused by camera shake, particularly in allocating sufficient blur correction angles for the rolling direction, as existing solutions often compromise on the correction angles due to limitations in the movement range of image sensors.
Innovation Solution
A camera body with a detachable lens unit that includes a first blur-detecting part and a first blur-correction part, which communicates with the lens unit to determine if it has a second blur-correction part for pitching and yawing directions, allowing the camera body to allocate sufficient blur correction only for the rolling direction, thereby maximizing the correction effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the camera body attempts to correct blur in all directions (pitching, yawing, and rolling) using its own blur-correction mechanism, then comprehensive blur correction is achieved, but the blur correction angle for the rolling direction becomes insufficient due to movement range limitations of the image sensor
Solution Approach 1:
The invention segments the blur correction function by direction: the lens unit's second blur-correction part handles pitching and yawing directions, while the camera body's first blur-correction part exclusively handles the rolling direction. This segmentation allows each component to optimize its correction capability within its specific operational range, resolving the contradiction between comprehensive correction and sufficient correction angle.
Solution Approach 2:
The controller acts as an intermediary that coordinates between the lens unit's blur-correction part and the camera body's blur-correction part. It acquires information about the lens unit's correction capabilities and dynamically allocates correction responsibilities, enabling the system to achieve both comprehensive correction and adequate correction angles through cooperative operation.
2Reliability
If the camera body allocates sufficient blur correction angle for the rolling direction, then the correction effect for rolling blur is maximized, but the correction capability for pitching and yawing directions is reduced
Solution Approach 1:
The invention divides the blur correction functionality into specialized segments: the lens unit's second blur-correction part is dedicated to pitching and yawing directions, while the camera body's first blur-correction part is dedicated to the rolling direction. This segmentation enables each component to provide optimal correction for its assigned directions without compromising overall multi-directional correction capability.
Solution Approach 2:
The invention merges the blur correction capabilities of both the lens unit and the camera body into a coordinated system. The controller integrates information from both components and orchestrates their combined operation, allowing the system to achieve superior rolling direction correction while maintaining comprehensive multi-directional correction through the lens unit's contribution.
3Device complexity
If the camera body independently determines blur correction strategy without lens unit information, then the control system is simpler, but the blur correction allocation is less optimal
Solution Approach 1:
The controller implements a feedback mechanism by acquiring information from the lens unit about its blur-correction part and capabilities. This feedback enables the controller to make informed decisions about blur correction allocation, optimizing the use of both the lens unit's and camera body's correction resources while maintaining manageable system complexity through structured information exchange.
Data Source
AI summary
A camera body according to the present disclosure is one on which a lens unit is detachably mounted. The lens unit includes an optical system to form an optical image of a subject onto an imaging surface. The camera body includes: an imaging part having the imaging surface to form an image by converting light incident from the optical system into an electric signal; a first blur-detecting part capable of detecting motion of the camera body at least in a pitching, yawing, and rolling directions; a first blur-correction part capable of correcting a blur caused by the motion in the pitching, yawing, and rolling directions, based on a result of the detection by the first blur-detecting part; and a first controller, capable of communicating with the lens unit, controlling both the first blur-detecting part and the first blur-correction part. The first controller acquires information indicating whether or not the lens unit includes a second blur-correction part to correct a blur caused by the motion in the pitching and yawing directions. The first blur-correction part corrects only a blur caused by the motion in the rolling direction when the lens unit causes the second blur-correction part to operate.