GPO PASSION 8x56 Manual De Instrucciones página 24

Adjustment of the diopter
since most users have a minor visual acuity difference between
their left eye and right eye, the diopter is an adjustment feature
that allows the user to custom focus each side of the binocular to
the correct vision of each eye. To compensate for possible imbal-
ances of the vision between both eyes, you can adjust this binocu-
lar to your individual needs. The diopter adjustment ring is located
on the right ocular below the eyecups. Make sure the interpupillary
distance (IPD) is adjusted correctly. See instruction above.
Make sure the interpupillary distance (IPD) is adjusted correctly.
See instruction above.
Select an object to be viewed at a distance of more than 20 meters
(appx 20 yards).
Cover or close your RIGHT eye.
Using the center focus wheel,
focus your LEFT eye on your
selected object until the picture
is sharp.