Live View Focus-Position Display Control for Reduced Flicker
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Solution Overview
Problem
Existing display methods for AF frames can cause visibility reduction and flickering when the in-focus position changes, especially with an increase in the number of distance measurement points, making it difficult for users to understand the focus state clearly.
Innovation Solution
A display control apparatus and method that differentiates the display form of AF frames based on whether focus is continuously achieved, using higher visibility for continuously in-focus positions and reduced visibility for positions where focus is not achieved, thereby minimizing flickering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the position of the displayed AF frame is changed each time the detected in-focus position changes, then the focus detection accuracy is improved, but the display stability deteriorates causing flicker to the user
Solution Approach 1:
The patent applies local quality by differentiating the display treatment based on the continuity of focus achievement. Positions where focus is continuously achieved are displayed with high visibility (first display form), while positions where focus is not continuously achieved are displayed with lower visibility or suppressed (second display form). This localized differentiation resolves the contradiction by maintaining stable display characteristics for each position type while accurately reflecting focus detection results.
2Measurement precision
If the number of distance measurement points is increased, then the focus detection precision is improved, but the visibility of the live view image deteriorates due to increased flicker
Solution Approach 1:
The patent applies local quality by differentiating the display treatment based on the continuity of focus achievement. Positions where focus is continuously achieved are displayed with high visibility (first display form), while positions where focus is not continuously achieved are displayed with lower visibility or suppressed (second display form). This localized differentiation resolves the contradiction by maintaining stable display characteristics for each position type while accurately reflecting focus detection results.
3Loss of information
If multiple AF frames are displayed simultaneously, then the comprehensive focus information is improved, but the ease of operation deteriorates due to difficulty in understanding focus state
Solution Approach 1:
The patent applies local quality by differentiating the display treatment based on the continuity of focus achievement. Positions where focus is continuously achieved are displayed with high visibility (first display form), while positions where focus is not continuously achieved are displayed with lower visibility or suppressed (second display form). This localized differentiation resolves the contradiction by maintaining stable display characteristics for each position type while accurately reflecting focus detection results.
Data Source
AI summary
A display control apparatus includes an acquisition unit configured to acquire information about an in-focus position on a live view image, and a display control unit configured to perform control to display an item indicating the in-focus position on the live view image, based on the information acquired by the acquisition unit. The display control unit performs control to display a first item at a first in-focus position at which focus is continuously achieved, in a display form having higher visibility than in a display form of a second item to be displayed at a second in-focus position at which focus is not achieved at least last time, the first in-focus position and the second in-focus position being positions at which focus is currently achieved.