Calibration Tool Alignment Ruler Camera Lens Auto Focus Fold Card 2 Pack 689790291111
This compact ruler allows you to determine if your lens is
auto-focusing accurately as it should. It is an essential tool that is
particularly useful when shooting with a shallow depth of field, where
focusing should ideally be "spot on".
You can use this ruler to determine how "off" the focusing is for
a particular camera / lens combination and, on supported cameras,
adjust the camera's auto-focus settings to resolve this
On Nikon cameras, this feature is known as "AF Fine Tune". On
Canon and Sony cameras, it's known as "AF Micro Adjustment". Please
refer to your camera's instructions manual to see if this feature is
Package Included: Lens Focus Calibration Card X 2
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