Efr Scopes And The Adjustable Objective - Leupold THE OFFICIAL Owner's Handbook Manual

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.
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To adjust the parallax distance,
turn the focus ring.