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Canon Patent Application on improving eye detection on viewfinders
In this patent application, canon looks to improve if and when they turn off the LCD display to conserve battery life.
This patent uses a combination of sensors to detect if the LCD is open, viewable or tucked away to determine the distance thresholds automatically.
For instance, if you have the LCD open and twisted to the front, it's less particular about objects coming close to the viewfinder than it would be if the LCD is twisted and closed.
This of course, makes alot of sense to me, and one of the annoyances with the M5 is its LCD shutoff when it detects a tilt upwards as possible eye movement.
US Patent Application 20180041712
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