Observation Apparatus Enlarged Display Focus Adjustment
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Solution Overview
Problem
Existing observation apparatuses face difficulties in manually adjusting focus on small or camouflaged areas of a subject, as manual focus adjustment while looking at the screen can be challenging, especially when the area to be focused is small or has a similar color or outline to neighboring portions, leading to unclear displays and poor visibility during display enlargement.
Innovation Solution
An observation apparatus with an image-pickup unit, image-pickup control unit, and enlargement control unit that allows display enlargement of a specific portion of the observation image, changing image-pickup conditions such as focus and exposure based on the enlargement target, enabling precise manual focusing even in AF mode, and displaying distance information to facilitate focus adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If display enlargement is conducted for a small or camouflaged area during manual focus adjustment, then visibility of the target area is improved, but the enlarged display may not be in focus or properly exposed, making it difficult to determine the actual focus state
Solution Approach 1:
The system performs preliminary focus and exposure measurements on the enlarged area before displaying it. The enlargement control unit measures image-pickup conditions specifically for the enlarged region, ensuring that the displayed enlarged image is both in focus and properly exposed, thereby resolving the contradiction between visibility and focus accuracy
Solution Approach 2:
The system provides feedback by displaying the measured focus and exposure status of the enlarged area. The observation apparatus shows whether the enlarged area is in focus and properly exposed, allowing the user to adjust manual focus based on this feedback information, thus improving both visibility and focus precision
2Ease of operation
If manual focus adjustment is performed while looking at the full screen, then the overall composition is maintained, but it is difficult to determine whether a specific small area is in focus
Solution Approach 1:
The system segments the display into multiple regions: the full-screen view for overall composition and an enlarged view for detailed focus checking. This segmentation allows users to maintain awareness of the overall composition while being able to closely examine specific areas to determine focus accuracy
Solution Approach 2:
The enlarged display acts as an intermediary between the full-screen view and the actual focus state. By providing a magnified view with dedicated focus measurement and display, it mediates the user's ability to judge focus accuracy without losing the context of the overall composition
3Measurement precision
If image-pickup conditions are optimized for the enlarged area, then the enlarged display quality is improved, but the conditions may not be suitable for the entire image
Solution Approach 1:
The system applies local quality by measuring and optimizing image-pickup conditions specifically for the enlarged area rather than for the entire image. The enlargement control unit determines focus and exposure conditions tailored to the specific region being enlarged, allowing high-quality detailed viewing while maintaining flexibility for different shooting scenarios
Data Source
AI summary
An observation apparatus includes an image-pickup control unit configured to set an image-pickup condition of an image-pickup unit so as to control the image-pickup unit, and an enlargement control unit configured to conduct control so that display enlargement is conducted for part of an observation image picked up by the image-pickup unit when a prescribed manipulation is made while the observation image is displayed and to control the image-pickup control unit so that at least a portion of the image-pickup condition set on the basis of an observation image that is not enlarged is changed and set on the basis of a target for which the display enlargement is to be conducted.