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Your Explore Scientific binocular is fitted with eyecups which can be rolled or
twisted up or down (depending on your model) to optimize the view for your
eyes and to exclude extraneous light. If you are not wearing eyeglasses or
sunglasses, keep the eyecups fully extended (“up” position). If you are wearing
glasses, roll down the eyecups or twist them to the down position. This will
bring your eyes closer to the binocular’s eyepiece (ocular) lens to ensure you
can see the entire image (full field of view with no “cutoff” or “tunnel vision”).
IPD (Interpupillary Distance) Adjustment
The distance or spacing between the center of the pupils, called “interpupillary
distance” (IPD) varies from person to person. To adjust the binocular to match
your eyes, follow these simple steps:
1. Hold your binocular in the normal viewing position. Grasp each barrel firmly.
2. Move the barrels closer together or further apart until you see a single
circular field (don’t worry about focus yet).
3. Always re-set your binocular to this position before using it.
Twisted Eyecup
Rolled Eyecup
Twisted Eyecup
Rolled Eyecup
Twisted Eyecup
Rolled Eyecup
Drawing may not match binocular model.
Eyecup Adjustment
