Sony FE 70-200 mm f/ 2.8 GM OSS Lens Betriebsanweisung

4-14

SAL75300 (4.5-5.6/75-300) (75-300mm F4.5-5.6)

• 1000 mm Collimator

• Flange Back Tester

• A-mount Attachment

• Flange Back Gauge (43.50mm)

Focus-shift adjustment must be completed before flange back (f’F) adjustment.

1)

When the focus-shift adjustment is not completed, perform “4-5. FOCUS-SHIFT CHECK/ADJUSTMENT”.

2)

Perform “4-4-1. Flange Back (f’F) Check”, and check that the flange back (f’F) of the checking lens is out of specification of the

Table 4-4-1.

3)

Calculate focus error amount using the following formula.

Focus error amount = Flange back (f’F) reading at focal length (75 mm) - 44.75 mm

Focus error amount: Amount that should be adjusted by the back washer thickness.

f’F:

Flange back value (Reading value)