Eagle Optics Golden Eagle HD User Manual - Focus The Binocular
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Focus the binocular
For the best views, follow this two-step process to properly adjust the
center focus and diopter. Choose an object that is about 20 yards away
from you and stay in the same spot until you have adjusted the binocular
for your eyes.
1. Adjust the center focus—start by closing your right eye or covering
the right objective lens with your hand.
Focus your left eye on the object and adjust
the center focus wheel until the image is
in focus. Leave the center focus in this
position as you adjust the diopter.
2. Adjust the diopter—start by closing your left eye or covering the left
objective lens with your hand. Look through
your right eye and unlock the diopter to
make this adjustment (ring found on the right
eyepiece). Adjust diopter until the object is in
focus. Lock the diopter and make note of this
diopter setting in case you need to set it again.
From this point on, you will only need to use the center focus wheel.
Binoculars are not intended for looking at the sun, or any other intense light
source. Such viewing could damage the retina and cornea of your eyes—even
to the point of causing blindness.