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Diopter Adjustment and Focusing
1. Adjust eyecups interpupillary distance as descri-
bed in the previous sections.
2. Set the diopter adjustment ring to zero and view
a distant object.
3. Keep both eyes open at all times.
4. Using a lens cover or your hand, cover the objec-
tive (front) lens of the same side of the binocular
that has the diopter adjustment ring. This is usu-
ally the right side.
5. Using the center focus wheel, focus on a distant
object with fine detail (e.g., brick wall, tree bran-
ches, etc.) until it appears as sharp as possible.
6. Uncover the objective lens on the diopter side,
cover the other objective lens, the left side, then
view the same object.
7. Using the diopter adjustment ring, move the di-
opter adjustment marker to the “+” or “-” till you
reach focus.
Caution should be used as over turning or forcing
the diopter ring can cause damage or cause the
eyepiece to break away from the chassis.
8. Your binocular should now be adjusted for your
eyesight. Focusing for any distance can now be
done simply by turning the center focus wheel.
Make a note of your diopter setting for future
reference.
Diopter
Adjustment Marker
Diopter
Adjustment
Ring
Summary of Contents for TETON 10X42
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