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1.3. Basic Use
This section will show the user how to adjust and properly use their binoculars.
1.3.1. IPD Adjustment
The distance or spacing between the center of the pupils is called the “interpupillary distance” or “IPD”
for short. The IPD will vary from person to person, however, to adjust the binoculars to match your eyes,
follow these simple steps:
•
Hold the binoculars a normal viewing position.
•
Grasp each barrel firmly and move them closer together
or further apart until you see a single circular field.
•
Always reset your binoculars to an optimal position
before using it.
1.3.3. Adjusting the Focus
After the IPD for your binoculars has been set you can begin adjusting the focus of the image. The image
can be adjusted by the focus wheel located in the center of your binoculars. To begin adjusting the
image, follow these simple steps provided below.
•
Close your right eye and view an object with your left eye. Focus on the object by rotating the
center focus wheel until the image is sharp and clear.
•
Open your right eye and close your left eye. Rotate the right eyepiece until the object sighted is
sharp and clear
1.3.3.1. Diopter Adjusting
The diopter ring, located on the ocular lens eyecup of your binoculars, is there to help compensate for
the differences between the eyes when using your binoculars. It is there to assist in maintaining the two
barrels of the device in proper relation to your specific IPD. For steps on how to adjust your diopter
settings, refer to the steps provided below.
•
Set the rings located on the eyecup to the zero position.
To set the rings to the zero position move the rings
clockwise until it is flush with the binoculars.
•
Using a lens cover, or your hand, cover the objective lens
(front) lens
