Vortex Optics VIPER XBR 2.5-10X44 CROSSBOW SCOPE User Manual

Page 3

eTiCle

pTions

The Focal Plane

All scope reticles can be termed either first focal plane (FFP) or
second focal plane (SFP) according to the internal location of the
reticle within the scope. This model features a second focal plane
reticle design.

Second Focal Plane Reticles

Second focal plane reticles are located near the eyepiece behind the
image erecting and magnifying lenses. This style of reticle does not
visually change in size when you change the magnification. The
advantage of an SFP reticle is that it always maintains the same ideal
visual appearance.

Important Note: The marked Viper XBR 2.5-10x44 crossbow scope
reticle subtensions used for arrow drop and wind drift compensation
are correct at a magnification of 10x.

rossBow

Cope

djusTmenTs

Reticle Focus

The Viper XBR crossbow scope features a fast focus eyepiece designed to
quickly and easily adjust the reticle focus.

To adjust the reticle focus:

1. Look through the scope at a
blank white wall or up at the sky.
2. Turn the eyepiece focus knob in
or out until the reticle image is as
crisp as possible.

TIP: Try to make this particular
adjustment quickly as your eye will
try to compensate for an out-of-focus
reticle.

Once this adjustment is complete, it will not be necessary to re-focus
every time you use the crossbow scope. However, because your eyesight
may change over time, you should re-check this adjustment periodically.

Warning

Looking directly at the sun through a crossbow scope, or any optical
instrument, can cause severe and permanent damage to your eyesight.

Adjust the Reticle Focus