Originally Posted by elkcub
For an 8x binocular, 'A' provides a 57.09 deg. AFOV at the retina.
Similarly 'B' provides a 65.65 deg. AFOV.
The additional 8.56 deg. in "apparent field" allows for greater depth cues and peripheral motion perception.
Thanks for the input. I've got plenty to learn. Are you saying that a larger apparent field of view projects an image on a larger area of the retina? Perhaps that is self-evident to many, but I just want to make sure I understand.