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CUSTOMIZING THE VIPER HD
Adjust the eyecups
Vortex brings you high definition images with the rugged Viper®HD
binocular—an excellent choice for any outdoor activity.
Ocular Lens
Center Focus
Diopter
Tripod Adapter
Socket
Twist-up Eyecup
Strap
Attachment
Objective Lens
The eyecups on a Viper HD binocular twist up and down so any viewer can see
the full field and enjoy comfortable viewing—with or without eyeglasses.
When not using eyeglasses or
sunglasses, keep the eyecups fully
extended. For the best viewing when
viewing through eyeglasses, twist
eyecups down.
Adjust the interpupillary distance
The interpupillary distance (IPD) is the distance between the centers of the left
and right eye pupils. Match the IPD of your eyes to that of the binocular so that
you see a single image that is free of shading.
IPD
Distance between the centers of
the ocular lenses.
Rotate the binocular barrels inward
or outward to line your eyes up with
ocular lenses.