iphone - Measure the distance from the camera to an object with autofocus -
i've been looking photographic camera property tells distance between photographic camera , object in focus, without success. considering phone has autofocus, 1 should able tell distance checking focal length. taken images taken has next properties, both should i'm looking for:
kcgimagepropertyexiffocallength
kcgimagepropertyexifsubjectdistance
is there way see these properties in photographic camera without taking picture?
iphone objective-c
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