Night Optics Falcon 6x Gen 3 Gated Long-Range Night Vision Binocular - Manual (Page 103)

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NOTE
•
The sharpest image will be observed only
when the objective lens and both eyepiece
lenses are properly focused.
•
Fold the eyecup to obstruct your view through
the eyepiece lens instead of closing one eye
to prevent the eye from being temporarily out
of focus.
(8) Fold the right eyecup over the eyepiece lens with your
right thumb or forefinger to obstruct view through the right
eyepiece lens. Rotate the left diopter adjustment for the clearest
view of the image intensifier screen.
(9) Fold the left eyecup over the eyepiece lens with your left
thumb or forefinger to obstruct view through the left eyepiece lens.
Rotate the right diopter adjustment for the clearest view on the
image intensifier screen.
NOTE
Any readjustment of eye relief requires resetting
the diopter adjustments.
(10) Adjust the eye relief distance by pressing the eye relief
adjustment (Figure 2-13) and sliding goggles fore or aft to obtain a
full field-of-view of the image. Reset the diopter adjustments for
best image.
(11) Adjust the objective lens focus ring (Figure 2-1) while
observing an object until the sharpest image is obtained.