Basic Information about Binoculars
Eye relief
Eye relief is the distance from the outer surface of the eyepiece lens to the position where the exit pupil is formed (eyepoint).
Looking through binoculars from the eyepoint, you can obtain the whole field of view without vignetting.
It is recommended for eyeglass wearers to use binoculars with a longer eye relief (high eyepoint).
For eyeglass wearers
Long-eye-relief binoculars on the left
Short-eye-relief binoculars on the right
