API for camera magnification level?

Is there a programmatic means of getting an iPhone camera lens' magnification level? I'm referring to the .5x, 1x and 2.x/2.5x/3.x values for the ultra wide, wide and telephoto lenses available on iPhones of the last few years. I tried accessing the AVCaptureDevice videoZoomFactor property, but that returns the same value for both of my iPhone's cameras.

API for camera magnification level?
 
 
Q