This publication describes techniques and apparatuses, implemented on variable-display devices (e.g., foldable devices, laptops, multi-display devices), directed at capturing screen-fitting still images or video streams with a maximized photographic field of view, regardless of display size and device orientation. In aspects, a variable-display device utilizing a square image sensor with a diagonal greater or equal in size to the diameter of an image circle (e.g., the cross-section of the scenic light focused on an image sensor by means of one or more lenses) enables the device to crop to the usual photographic and video aspect ratios (e.g., 4:3, 16:9).
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Talvala, Eino-Ville and Johnston, Chorong, "Techniques and Apparatuses for Variable-Display Devices to Capture Screen-Fitting Images with a Maximized Field of View", Technical Disclosure Commons, (June 29, 2020)