Vortex Optics DIAMONDBACK HP 2-8X32 RIFLESCOPE - Manual (Page 4)

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RIFLESCOPE
diamondback
Diamondback HP riflescopes use a side focus adjustment which provides
maximum image sharpness and eliminates parallax error.
Using the Side Focus
1. Be sure the reticle is correctly focused (see Reticle Focus on page 5).
2. Turn the side focus knob until the target image is as sharp as
possible. The yardage numbers referenced
on knob should closely match the actual
yardage to the target.
3. Check for parallax error by moving
your head back and forth while looking
through the scope. The focus is correct if
there is no apparent shift of the reticle on
the target. If you notice any shift, adjust
the focus knob slightly until all shift is eliminated.
Setting the side focus:
Parallax is a phenomenon that results when the target
image does not quite fall on the same optical plane as
the reticle within the scope. When the shooter’s eye
is not precisely centered in the eyepiece, there can be
apparent movement of the target in relation to the
reticle, which can cause a small shift in the point of
aim. Parallax error is most problematic for precision
shooters using high magnification.
The Diamondback HP riflescope incorporates adjustable elevation and
windage turret dials with audible clicks. Each audible click moves the
bullet’s point-of-impact 1/4 of a minute of angle (MOA).
1/4 MOA closely corresponds to 1/4 inch at 100 yards, 1/2 inch at 200
yards, 3/4 inch at 300 yards—taking four (4) clicks to move the bullet’s
point-of-impact approximately one inch at 100 yards.
Windage and Elevation Adjustments
Note: After sight-in, you can re-align the zero marks on the turret dials
with the reference dots if you wish (see Indexing Adjustment Dials with
Zero Reset on page 12). Replace outer covers when done.
1. Remove the outer covers.
2. Turn the turret in the appropriate
direction: Up/Down or Left/Right as
indicated by the arrows.
3. Following the directional arrows, turn
the dials in the direction you wish the
bullet’s point-of-impact to go to.
To make adjustments:
Variable Power Adjustments
To change the magnification, turn
the magnification ring to the desired
level.
Magnification
Scale
Elevation Turret Dial
Windage Turret Dial
Adjust the side focus knob