The Canon EOS R3 development announcement caused quite the furore when the camera maker revealed it would be getting an eye-controlled autofocus point selection mechanism that was seen in the likes of the old EOS 3 and EOS 5 film cameras.
Very little is known about what Canon is calling the Eye Control Function, except that it will allow users to select an AF point by just looking at it through the viewfinder. However, two new patents filed in the US have offered some further insight on how this might work.
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