Tilt-Shift Lens Information Transfer for Camera Display Feedback
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Solution Overview
Problem
Conventional lens interchangeable type cameras do not enable users to confirm the current tilt-shift amount during tilt-shift imaging.
Innovation Solution
A lens apparatus that includes an imaging optical system with movable optical members and a transmitting unit to transmit information about their movable ranges to an image pickup apparatus, along with a display unit to display this information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the lens apparatus adjusts tilt-shift amount without displaying it, then the imaging function is maintained, but the user cannot confirm the current tilt-shift amount
Solution Approach 1:
A transmitting unit is introduced as an intermediary component that transfers tilt-shift amount information from the lens apparatus to the image pickup apparatus. This mediator enables information flow without requiring direct display hardware in the lens, resolving the contradiction by adding minimal complexity only where needed for communication.
Solution Approach 2:
The image pickup apparatus serves multiple functions: it performs imaging operations and simultaneously displays tilt-shift amount information received from the lens apparatus. This multi-functionality approach avoids dedicated display hardware in the lens while still providing user feedback, thus reducing overall system complexity.
2Loss of information
If tilt-shift information is transmitted to image pickup apparatus, then user visibility of tilt-shift amount is improved, but device complexity increases
Solution Approach 1:
The transmitting unit is integrated within the existing lens apparatus structure, merging the information transmission function with the optical system. This consolidation minimizes additional complexity by combining multiple functions (optical adjustment and data communication) into a single integrated unit rather than adding separate external components.
Data Source
AI summary
A lens apparatus attachable to and detachable from an image pickup apparatus includes an imaging optical system that includes at least one optical member configured to move so as to change at least one of a tilt effect of tilting a focal plane relative to an imaging plane of an image sensor included in the image pickup apparatus and a shift effect of moving an imaging range, and a transmitting unit configured to transmit information about a movable range of the at least one optical member to the image pickup apparatus.