Vortex DiamondBack Manual Download Page 3

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Properly focus the binocular

For the best reults, follow this two-step process to properly 
adjust the center focus and diopter. Choose an object about 
20 yards away and stay in the same spot until you have 
adjusted the binocular for your eyes.  

1. Adjust the center focus

—start by 

closing your right eye or covering 
the right objective lens with your 
hand. Focus your left eye on the 
object and adjust the center focus 
wheel until the image is in focus. 
Leave the center focus in this 
position as you adjust the diopter. 

 

2. Adjust the diopter

—start by closing your left eye or 

covering the left objective lens with your hand. Look 
through your right eye and adjust the diopter ring (found 

on the right eyepiece) until the 
object is in focus. Make note of this 
diopter setting in case you need 
to set it again. From this point on, 
you will only need to use the center 
focus wheel.

The Diamondback comes with a rainguard for the ocular 
lenses and tethered objective lens covers. Use these covers 
to protect the lenses whenever you are not using your 
binocular.

Lens Covers

The Diamondback’s protective case provides safe storage 
between viewing sessions.

Carry Case

a

ccessOries

Attach the padded neck strap to the Diamondback in these 
three simple steps.

Neck Strap

1.  Push a few 
inches of the strap 
through the strap 
attachment on the 
binocular.

3.  Adjust the 
overall length, then 
pull the strap tight 
until it’s secured 
within the buckle.

2.  Hold the buckle 
and thread the end of 
the strap through the 
buckle.

Note: 

If using another type of strap, never attach metal o-rings directly 

onto the strap attachment.

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