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Thank you for purchasing your new Bushnell® binoculars.
This manual will help you optimize your viewing experience by explaining how you can adjust the binocular to your eyes,
and how to care for this instrument. Read the instructions carefully before using your binocular.
EYECUP ADJUSTMENT
Your Bushnell binocular is fitted with eyecups that provide a comfortable view of the full image and help to exclude
extraneous light. If you need to wear glasses when using binoculars, leave the eyecup in the "down" position (or, for
models with fold down style eyecups, fold them down) (Fig. 1, next page). For use without eyeglasses or sunglasses, twist
up the eyecups (or, for models with fold down style eyecups, simply leave them up) (Fig. 2). This will place your eyes farther
from the binocular's ocular lenses, at the correct eye relief distance, allowing you to see the full field of view.
IPD (INTERPUPILLARY DISTANCE) ADJUSTMENT
The spacing between the pupils of your eyes, called "interpupillary distance," varies from person to person. To match your
binoculars to your IPD or "eye to eye" width:
1. Point them at a white wall or blank area of the sky. Hold the binoculars and view through them as you normally would.
Don't worry about focus yet.
2. Grasp each side of the binocular firmly. Move the left and right sides closer together or farther apart (Fig. 3, next
page) until you see a single image with no shaded areas.
FOCUS AND DIOPTER ADJUSTMENT
1. Adjust the eyecups and IPD as described in the previous sections.
2. Using the lens cap (if supplied) or your hand, cover the objective lens on the right side of the binocular.
3. Using the center focus knob, focus on a distant object with fine detail (e.g., brick wall, tree branches, etc) until it
appears as sharp as possible when viewed through the left side of the binocular.
4. Uncover the objective lens on the right side, and cover the left objective lens while continuing to view the same object.
5. Rotate the diopter adjustment ring (NOT the center focus knob) located directly below the right eyecup (Fig. 4) to
bring the object into focus in the right side of the binocular. Note: on some models, there is no ring; rotate the entire
right eyecup to adjust diopter. Avoid over-turning or forcing the diopter mechanism. If you are unable to bring the
object into focus for your right eye by adjusting the diopter ring/eyecup, make sure the left side is still in focus (repeat
steps #2-4 if necessary). The diopter adjustment essentially provides "fine focus" on one side of the binocular (right
only) to allow for slight differences in the vision of your left and right eyes.
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NEVER LOOK DIRECTLY AT THE SUN WITH YOUR BINOCULAR,
AS IT MAY CAUSE SERIOUS DAMAGE TO YOUR EYES
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PARTS GUIDE
Ocular Lens
Center Focus Knob
Eyecups
Tripod Adapter Socket*
Objective Lens
Diopter Adjustment Ring**
* under cap (compact models are not
tripod adaptable)
** no diopter ring on some models-
rotate entire right eyecup
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