4-15
SAL50M28 (MACRO 2.8/50) (50mm F2.8 Macro)
6)
Adjust the back adjustment washer thickness according to the result of step 5). (Refer to Table 4-4-1 and Fig.4-4-7.)
Note:
Use the micrometer gauge (or slide gauge) to measure the back adjustment washer thickness.
If focus error is a negative value: Decrease adjustment back washer thickness by error amount to increase flange back.
If focus error is a positive value:
Increase adjustment back washer thickness by error amount to decrease flange back.
7)
Calculate the coupler adjustment washer thickness using the following formula, and replace the adjustment washer. (Refer to Table 4-
4-1 and Fig.4-4-7.)
Coupler djustment washer thickness = Back adjustment washer thickness - 0.05 mm
Back adjustment washer
Parts No.
t (mm)
A
2-684-123-01
0.05
B
2-684-124-01
0.07
C
2-684-125-01
0.1
D
2-684-126-01
0.2
E
2-683-127-01
0.5
Coupler adjustment washer
Parts No.
t (mm)
A
2-684-057-01
0.05
B
2-684-058-01
0.07
C
2-684-059-01
0.1
D
2-684-060-01
0.2
E
2-684-061-01
0.5
Table 4-4-1
Fig.4-4-7
6)
Install the back adjustment washer and coupler adjustment washer, and perform “4-4-1. Flange Back (f’F) Check” again.
A
A
Back Adjustment Washer
Coupler Adjustment Washer
