Vortex Optics RAZOR HD 1-4X24 (MOA) - EBR-556 MOA - Manual (Page 9)

Illumination Knob
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Parallax Adjustment
The Vortex Razor 1–4x24 riflescopes use a variable intensity
reticle illumination system to aid in low light performance.
Illumination intensity levels will vary from bright to ultra low
intensity compatible with night vision devices at the lowest
setting.
The illumination knob allows for 11 levels of brightness
intensity; an off click between each level
allows the shooter to turn the illumination
off and return to a favored intensity level
with just one click. The top six settings
(6, 7, 8, 9, 10 and 11) are visible in the
daytime, depending on the background
color. Settings below 6 are for low light
use when the user’s eyes have adjusted to
lower light levels. Lowest settings are for use with night vision
devices.
To change the battery, unscrew outer cap with a coin.
Remove the battery and replace with a new one.
Illumination Adjustment
The Razor 1-4x24 series riflescopes are non-adjustable
for parallax correction and are set from the factory to be
parallax-free at 100 yards.
• At distances under 100 yards, parallax error is less than 1 inch.
• At distances over 100 yards parallax error is minimal; using
good consistent shooting form and cheek weld will prevent most
problems with parallax.