Read Sony SAL70200G2 Service Manual online
5-7
SAL70200G2 (2.8/70-200 G SSM Ⅱ) (70-200mm F2.8 G SSM II)
2) If the result in step 1) does not meet the specification, push the 5 group ball frame block to reduce the gap or play.
a. Disassemble up to outer barrel.
b. Push the 5 group ball frame tube block in the opposite direction where the CB occurs.
b. Push the 5 group ball frame tube block in the opposite direction where the CB occurs.
5 Group Ball Frame Block
Fig.
5-3-7
3) If the result does not meet the specification in steps 1) and 2), push the 1 group ball frame tube block to reduce the gap or play again.
4) When the optical adjustment is completed, make the marking-off on the bore of mirror tube block and outer diameter of 1 group ball
4) When the optical adjustment is completed, make the marking-off on the bore of mirror tube block and outer diameter of 1 group ball
frame tube block (G3 riveting tube block).
Note:
Note:
When making the marking-off, remove the G1 lens and the G2 lens.
Mirror Tube Block
G3 Riveting Tube Block
G1
G2
1 Group Ball Frame Tube Block
G1 Holder Ring
Make the marking-off on the outer diameter
Fig.
5-3-8
5-4. PROJECTIVE RESOLVING POWER CHECK/ADJUSTMENT (ONE SIDE BLUR AD-
JUSTMENT)
5-4-1. Projective Resolving Power Check
Setting of Lens Test Projector.
Equipment
• Lens Test Projector and Variable Transformer (Output voltage: AC 100 V)
• Lens Test Projector and Variable Transformer (Output voltage: AC 100 V)
Note:
Connect the variable transformer (Output voltage: AC 100 V) to the lens test projector.
• A-mount Attachment
• Screen (Art paper)
• Tape Measure
• Plane Mirror (For SLRs)
• Screen (Art paper)
• Tape Measure
• Plane Mirror (For SLRs)
1. Preparations
1) Perform the following steps (1) to (3), and incorporate the internal lenses of the lens test projector according to the checking focal
1) Perform the following steps (1) to (3), and incorporate the internal lenses of the lens test projector according to the checking focal
length.
(1) Open the lid of the lens test projector.
(2) Pull up and turn the fixed levers on the right and left sides of the lens test projector.
(3) Remove or insert the lens.
(1) Open the lid of the lens test projector.
(2) Pull up and turn the fixed levers on the right and left sides of the lens test projector.
(3) Remove or insert the lens.
Note:
Be sure to have the right position and direction of the lens.
Lens test projector
Incorporate of the lenses
according to the checking focal-length (f).
according to the checking focal-length (f).
Lens
Fixed lever
Fixed lever
Lid
f=18 to 35 mm
f=35 to 100 mm
f=100 to 200 mm
f=200 to 300 mm
Heat-absorbing filter
Chart
Chart
Chart
Chart
Filament
Filament
Filament
Filament
Fig.
5-4-1
2) Attach the checking lens to the lens test projector, and set the equipment as shown in Fig. 5-4-2.
3) Turn the fan switch of the lens test projector to ON, then turn the lamp switch to ON.
3) Turn the fan switch of the lens test projector to ON, then turn the lamp switch to ON.
Distance
Lens test projector
Chart
Fan switch
Lamp switch
Plane mirror
Screen
A-mount attachment
Checking lens
F
L
Fig.
5-4-2
4) Turn the focus ring of the checking lens until the chart image projected on the screen is the sharpest at the center (y = 0).
5) Set the plane mirror to the center of the projected image (y = 0), and adjust the projector position so that the mirror reflects the light to
5) Set the plane mirror to the center of the projected image (y = 0), and adjust the projector position so that the mirror reflects the light to
the center of the lens.
Click on the first or last page to see other SAL70200G2 service manuals if exist.