Camera Focus Correction Display for Interchangeable Lens Units
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Solution Overview
Problem
Users face difficulties in setting a suitable focus correction value for interchangeable lens units in cameras, as they cannot confirm if the correction value is set correctly, especially when the mounted lens unit is unknown, leading to undesired image corrections and lack of information for adjusting settings for subsequent shots.
Innovation Solution
An image sensing apparatus with an acquisition unit to gather lens-specific information, a detection unit to measure focus shift, a display unit to show this information alongside a focus correction value, and an operation member to set the correction value, allowing users to confirm and adjust settings on a screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the user sets focus correction value while looking at the display screen without knowing the mounted lens unit, then the operation can be performed, but the user cannot confirm whether the correction value is set correctly for the mounted lens unit
Solution Approach 1:
The display screen provides feedback by showing the lens unit name or model number along with the focus correction value being set. This allows the user to confirm that the correction value is being set for the correct lens unit, resolving the information loss problem while maintaining ease of operation.
Solution Approach 2:
The display screen acts as an intermediary between the user and the lens unit identification system. It translates internal lens identification data into visible information (lens name/model) that the user can read and use to verify the correct focus correction value is being set.
2Device complexity
If the user cannot see the lens unit information on the display screen, then the display screen can remain simple, but the user has no way of knowing how much the captured image has been corrected
Solution Approach 1:
The display screen merges multiple pieces of information (lens unit identification, focus correction value, and correction amount) into a single integrated display. This allows the user to access all necessary information without adding separate displays or interfaces, maintaining simplicity while providing comprehensive information.
3Loss of time
If focus correction value is set without displaying lens-specific information, then the setting process remains fast, but the user cannot confirm the correction is appropriate for the mounted lens unit
Solution Approach 1:
The system performs preliminary action by automatically detecting the mounted lens unit and preparing the corresponding lens information and focus correction values before the user needs to set anything. This pre-preparation allows the user to quickly verify and set corrections without time-consuming manual lens identification, maintaining both speed and reliability.
Data Source
AI summary
An image sensing apparatus on which a plurality of lens units are interchangeably mountable includes a system controller configured to acquired information specific to a mounted lens unit from the mounted lens unit, a detection unit configured to detect a focus shift amount of the mounted lens unit, a display circuit configured to display the specific information acquired by the system controller in association with a focus correction value for correcting the focus shift amount detected by the detection unit, an operation switch configured to be operated by a user, and a setting unit that sets the focus correction value according to an operation on the operation switch.