Imaging Apparatus Zoom Position Control for Setting Misalignment
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Solution Overview
Problem
In high-magnification imaging apparatuses like digital cameras, slight object movements during zooming can cause framing issues, leading to unintended changes in shooting settings when through-image displaying is done at a zoom position different from the actual shooting field angle, resulting in suboptimal exposure, focus, and other setting misalignments.
Innovation Solution
An imaging apparatus with a Function Assist (FA) button that temporarily changes the zoom position to a wide field angle and returns to the original position, preventing changes in shooting settings during FA processing to ensure consistent settings for real shooting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If through-image displaying is performed at a zoom position wider than the actual shooting field angle, then the shooting range is expanded and easier to frame distant objects, but shooting settings (exposure, focus, etc.) become misaligned between the displayed image and the actual captured image
Solution Approach 1:
The patent implements a dynamic zoom position management system where the zoom position is temporarily changed during FA processing to provide a wider shooting range for framing distant objects. The system dynamically adjusts the zoom position based on the processing state (FA processing active or inactive), allowing the display to show a wider angle during framing assistance while returning to the original zoom position for accurate shooting settings alignment.
Solution Approach 2:
The patent records the original zoom position before FA processing begins as a first position, and temporarily changes it to a second position (wider angle) for the duration of FA processing. This preliminary recording and temporary modification ensures that when FA processing ends, the system can restore the original position, preventing setting misalignment between the displayed through-image and the actual captured image.
2Ease of operation
If the zoom position is temporarily changed to a wider angle during FA processing, then framing of distant moving objects becomes easier, but setting changes during processing may cause unintended shooting results
Solution Approach 1:
The patent extracts and isolates the zoom position control function during FA processing. By separating the zoom position management from other shooting settings control, the system allows temporary zoom position changes for easier framing while preventing unintended changes to other critical shooting settings (exposure, focus, etc.), thus maintaining shooting reliability.
Solution Approach 2:
The patent implements a feedback mechanism where the system monitors the FA processing state and automatically adjusts the zoom position accordingly. When FA processing is detected as active, the system feeds back to change the zoom position to the wider second position; when FA processing ends, it feeds back to restore the original first position, ensuring consistent and reliable shooting settings throughout the process.
3Illumination intensity
If exposure and focus are adjusted based on the wider-angle through-image, then the entire displayed area is optimized, but the actual captured image at the narrower zoom position may be too bright or dark and out of focus
Solution Approach 1:
The patent performs exposure and focus adjustments based on the actual shooting zoom position (first position) rather than the wider FA processing position (second position). By preliminarily determining the correct shooting position and recording it, the system ensures that exposure and focus settings are optimized for the actual captured image, not the wider display angle, preventing brightness and focus mismatches.
Data Source
AI summary
An imaging apparatus is capable of preventing unintended shooting setting when a through-image is displayed at a zoom position different from a field angle for reach shooting. The imaging apparatus includes a recording control unit configured to record a zoom position taken before a start of a function for temporarily changing the zoom position as a first position, a zoom control unit configured to perform control to move the zoom position from the first position to a second position when the function is started, and from the second position to the first position when the function is ended, and a control unit configured to perform control, when the zoom position is at the second position by the function, not to make any changes according to an instruction for changing specific shooting setting.