Leupold VX-II - Manual (Page 31)

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To eliminate parallax in adjustable objective and long range (side
focus) scopes, follow these steps:
1 . The reticle should be clear (focused) before adjusting the
parallax . If it is not, follow the instructions under “Focusing the
Reticle .” See page 11 .
2 . With the firearm in a stable position, look through the scope,
concentrating on the center aiming point of the reticle .
3 . Move your head slightly up and down while turning side
parallax or adjustable objective ring until the reticle does not
move in relation to the target . Using the numbers on the
adjustable objective ring, you can get your parallax adjustments
close to the proper setting before assuming a shooting position .
NoTE: Settings may vary slightly per individual preferences, air
temperature, and atmospheric conditions.
NoTE: The side parallax adjustment knob is not to be used to focus the
target image. If the reticle is first focused and the parallax then properly
set, the image should be clear.
EFR SCoPES AND THE ADjUSTABLE oBjECTIVE
Leupold EFR (Extended Focus Range) scopes can eliminate parallax
for distances as short as 10 meters . Unlike conventional adjustable
objective scopes, the focus ring on EFR models rotates more than
360° . It is important to pay special attention when adjusting
these scopes .