Инструкция для Sony 500 mm f/ 4 G SSM Lens

4-15

SAL500F80 (REFLEX 8/500) (500mm F8 Reflex)

2)

Perform “4-2-1. Optical Axis Check/Adjustment”, and check that the optical axis of the checking lens is out of specification.

3)

Turn the knob of flange back tester so that the dial gauge indicates “44.57mm”. Then, adjust the focus by rotating the G1 lens holder.

4)

Loosen the G1 stopper so that it lightly touches the G1+G3+G7 assy.

When performing the following adjustments, if the G1 stopper is tightened too much, the G1+G3+G7 assy may be damaged.

If loosened too much, the G1+G3+G7 assy may tilt, resulting in improper adjustment.

5)

Turn three G1 adjustment screws to move the position of the G1+G3+G7 assy so that the red and green color shifts at the peripheral

of chart image are equal.

6)

If not adjusted in step 5), rotate the G1+G3+G7 assy so that either red or green area is minimized, and perform step 5).

7)

If the adjustment is not completed in step 6), perform as follows.

1.

Remove the helicoid (G1 lens holder) having the G1+G3+G7 assy from the helicoid unit.

2.

Loosen the G2 retainer until it touches lightly the G2+G4+G5 assy.

3.

Rotate the G2.G4.G5 joint ball as is done in step 6).

4.

Install the helicoid (G1 lens holder) having the G1+G3+G7 assy to the helicoid (G2 lens holder) having the G2+G4+G5 assy.

5.

Repeat steps 3 and 4) so that so that either red or green shift at the peripheral of chart image is minimized.

6.

Tighten further the G2 stopper 5 to 10mm from the position where the G2 stopper touches the part (G2 hold plate) inside.

8)

If step 6) or 7) are performed, perform step 5) again.

G1 Adjustment Screws (Three areas)