Adjust the back adjustment washer thickness according to the result of step 7). (Refer to Table 4-4-2 and Fig.4-4-7.)
Use the micrometer gauge (or slide gauge) to measure the back adjustment washer thickness.
If focus error is a negative value: Decrease back adjustment washer thickness by error amount to increase flange back.
If focus error is a positive value: Increase back adjustment washer thickness by error amount to decrease flange back.
Change the coupler adjustment washer thickness to the back adjustment washer thickness. (Refer to Table 4-4-2 and Fig.4-4-7.)
Coupler adjustment washer thickness = Back adjustment washer thickness
Back adjustment washer
Back Adjustment Washer
10) Install the back adjustment washer and coupler adjustment washer, and perform "4-4-1. Focus-shift/Flange Back (f'F) Check" again.
11) After the adjustment is completed, apply the adhesive bond (B-10) to the position shown in the Fig.4-4-8.
SAL1870 (3.5-5.6/18-70) (DT 18-70mm F3.5-5.6)
Coupler Adjustment Washer
Coupler adjustment washer