Adjustment (Division) Of Focus Movement (T, W); Adjustment Of Back Focus - Nikon AF-S DXZoom-NIKKOR ED 12-24mm f/4G IF Repair Manual

ADJUSTMENT (DIVISION) OF FOCUS MOVEMENT (T, W)

１．Fit the infinity ( ∞ ) mark of the focus ring to the index.
２．Fix the aperture lever to make the aperture "full".
３．Read the values of the Wide and Tele sides.
４．Carry out the following calculations.
Ａ － Ｂ ＝ Ｃ
５．Adjust the thickness of the washer #101 by the value of C calculated in the above. If C is positive, thicken the
washer. If it is negative, thin the washer.
Note：When setting the washer #101, put a thin washer between thick washers.

ADJUSTMENT OF BACK FOCUS

１．Fit the infinity ( ∞ ) mark of the focus ring to the index.
２．Fix the aperture lever to make the aperture "full".
３．Read the value of Wide or Tele side.
４．Remove the bayonet mount.
５．Adjust the thickness of the washer #100 by the difference from the standard value. If the difference value is
positive, thicken the washer. If it is negative, thin the washer.
Ａ＝ Value of Tele side
Ｂ＝ Value of Wide side
Ｃ＝ Adjustment amount (mm) of the 2nd lens group unit washer #101
Focal length Standard（ｍｍ）
（ｆ）
１２ｍｍ －０． ０５～＋０． １０
１８ｍｍ －０． ０５～＋０． １０
２４ｍｍ －０． ０５～＋０． １０
- L23 ･ AF-S DX12-24/4G -
INC
JAA78451-R.3596.A