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SAL2470Z2 (Vario-Sonnar 2.8/24-70 ZA SSM II) (Vario-Sonnar T* 24-70mm F2.8 ZA SSM II)

•  Half Completion Inspection

1.  It decomposes the set from the mount side, and the state has been removed until the Zoom Barrel.

  Such as 1st Lens ASSY, Mirror Tube Block ASSY, the objective lens side of the parts is removal unnecessary.

 

2.  The Half Completion JIG is installed on the Cab lens with two screws.
3.  Connect, Encoder flexible, MR flexible, and SSM flexible. (It is no need to connect SW flexible board.)

MR Flexible

SW Flexible

Half Completion
JIG

Encoder Flexible

SSM Flexible

Finished Inspection

JIG 

II

2.  Startup of Lens Adjustment Program (ACSSM-S-VerXXX)
1)  Turn on the personal computer and the finished inspection JIG II.
2)   Start up  ACSSM-S-VerXXX.exe  from an arbitrary folder.
Note:
•   At the first time using, the followings appear on the screen (Fig. 4-1-7).

It is required to ask HQ about the password for the Com/User Characteristic Number and the manufacturer/type name of the personal 
computer.
Ex.  Com/User Characteristic Number : iYdDZfq9q
 

Personal Computer : SONY PCV-RZ33P

•  It is no need to input password to the computer once registered.

(The screen requires password doesn t appear.)

•  If the personal computer or the finished inspection JIG II is changed, the password and the Com/User Characteristic Number are 

changed.
Therefore on the startup, the password input is required again.

3)  Input the password and click [OK [Enter]], the following appears on the screen (Fig. 4-1-8).

 

 

1. Start up ACSSM-S-VerXXX.exe .

 

2.  When the Japanese window appears, click the [Set up] button, change the language to English.

Depending on the initial startup or setting made at the previous startup, the window differs.

3.  Set the following contents in the SETUP window.

MODEL

Model to be adjustment in this time

Language

Japanese

State

Final

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SAL2470Z2 (Vario-Sonnar 2.8/24-70 ZA SSM II) (Vario-Sonnar T* 24-70mm F2.8 ZA SSM II)

4.  Confirm that all of the items are set, and click [Save].

 

5.  Click the [Finish] to close the SETUP window.

The inspection method has the method of executing the method of inspecting the corresponding model as everything continues and the 
inspection of each item one by one.
Click [START] from the start up window when you inspect the corresponding model as everything continues.
Click the inspection of each item from the start up window, when you inspect one by one.

Equipment
• Luminance Box
•  Camera (One of DSLR-A700, SLT-A37/A57/A58/A65/A77/A99)
•  AE Master Lens
• Memory Card
•  Personal Computer (Color Calculator 2 installed)

  Confirm the checking lens by complete. 

1)  Install the memory card to the camera.
2)  Set the equipment, camera and AE master lens as shown in Fig. 4-2-1.

 

Luminance box
 Luminance: EV12

Camera
 ISO: 100
 Exposure Mode: M
 Shutter Speed: 1/125
 Aperture: F5.6
 Focus Mode: MF
 Metering: Center weighted
 Preset white balance: Tungsten
 D-R: OFF

Master lens or checking lens
 Zoom: Wide end (focal length: 24 mm)
 Focus: Infinity end

Shoot the center of the luminance surface

3)  Shoot the images under the following conditions and save them.

  Shoot the center of the luminance surface three times with the AE master lens and checking lens.

Luminance:

EV12

Zoom:

WIDE end (focal length: 24 mm)

Focus:

Infinity end

ISO:

100

Exposure Mode:

M

Shutter Speed:

1/125

Aperture:

F5.6

Focus Mode:

MF

Metering:

Center weighted

Preset white balance:

Tungsten

D-R:

OFF

  Check the image of both AE master lens and checking lens.

1)  Start the Color Calculator 2.

 

2)  Read the image from the file menu.

⇒

 

 

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SAL2470Z2 (Vario-Sonnar 2.8/24-70 ZA SSM II) (Vario-Sonnar T* 24-70mm F2.8 ZA SSM II)

3)  Set the Color Calculator 2 as follows.
 

Measured value display (Display menu): RGB+L*a*b*

 

Measuring method (Display menu): Center Single Area

 

 

Color space (Edit menu): sRGB

 

 

Area size for calculate (Edit menu 

→

Option): 256

×

256 Pixels

 

4)  Click the Calculate button to measure the image.
5)  After measuring, check the  G  values.
 Average 

G  value of the three images shoot with master lens:   (a)

 Average 

G  value of the three images shoot with checking lens: (b)

 

Calculate button

Check the “G” value

3. Checking Method
1)  Calculate aperture error using the following formula, and check that the aperture error is within the specification.

Aperture error = Average  G  value of checking lens (b) - Average  G  value of master lens (a)

 

Aperture error = -25 to +0 (WIDE end: 24 mm)

2)  When the aperture error is out of specification, perform  4-2-2. Aperture Diameter Adjustment .

Equipment
•  Adhesive bond (B-10)
•  Maximum Aperture Jig
• Universal Wrench
•  Chip-A for Universal Wrench
•  Chip-B for Universal Wrench
•  2Gun Tightening Jig

1. Preparation
1)  Remove parts indicated in Fig.4-2-8 from the lens unit.
2)  Set the zoom to 70 mm.
3)  Install the maximum aperture jig and open the aperture.

 

1st Lens Assy

Cam Ring Light Shield Barrel

2nd Lens Assy

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SAL2470Z2 (Vario-Sonnar 2.8/24-70 ZA SSM II) (Vario-Sonnar T* 24-70mm F2.8 ZA SSM II)

2. Adjustment Procedure
1)  Rotate the aperture block from the lens front so that the aperture blades are hidden behind the aperture hold ring. (Fig.4-2-9)
2)  Remove the maximum aperture jig once. Then, install the maximum aperture jig again and confirm the position of aperture blades.
3)  Confirm the aperture tolerance. Repeat the confirmation and adjustment until the aperture tolerance meets the specification.
4)  After completing the adjustment, apply the adhesive bond (B-10) to the four indicated locations (width in 10 mm). (Fig.4-2-9)

 

Aperture Block

Aperture Hold Ring

Aperture Hold Ring Spring

Apply the adhesive bond (B-10)

Apply the adhesive bond (B-10)

Setting of the Flange Back (f F) measuring instrument.

Equipment
•  1000 mm Collimator
•  Flange Back Tester
• A-mount Attachment
•  Flange Back Gauge (43.50 mm)

1)  Set the equipment as shown in the Fig. 4-3-1.

 

Flange back gauge (43.50mm)

A-mount attachment

Objective lens (10x)

Dial Gauge (Min. scale: 0.01 mm)

Scale ring

Eyepiece lens (7x)

Eyepiece ring

2)  Looking through the eyepiece lens, turn the eyepiece ring of the flange back tester so that cross line or scale in the view is the sharp-

est.

3)  Attach the flange back gauge (43.50 mm) securely to the A-mount attachment and hold them together.
4)  Turn the focusing knob of the flange back tester so that fine scratches on the flange back gauge (43.50 mm) is the sharpest.

Turn the knob in the direction of the arrow of Fig. 4-3-2 for correct reading.

 

Focusing knob

Focus on fine lines on the surface.

Always turn the knob in the arrow
direction for correct reading.

5)  Turn the scale ring of the dial gauge until the long pointer indicates  0 .

  This position is the flange back (f F) = 43.50 mm.

 

 

Memorize the position of short-pointer.

1)  Attach the checking lens to the flange back tester, and set the 1000 mm collimator.

  When attach the checking lens to the flange back tester, remove the rear light shield barrel.

 

1000 mm collimator

Checking lens

2)  Set the focus ring of the checking lens to 

∞

 (infinity) index or near 

∞

 (infinity)  and adjust the optical axis, observing the microscope 

so that the chart can be seen in the center.

3)  Turn the focusing knob of the flange back tester until the chart image comes into focus.
 

Also check the optical axis aligns with the chart center. (Refer to Fig. 4-3-4.)
Note:

  Figure shows example. The cause depends on individual lens.

 

Optical Alignment
Best alignment

Incorrect aligned
e.g. As the focusing knob is turned, the chart may appear blurry as illustrated.
The cause depends on individual lens.

4)  If the optical axis aligns the most unsharp, rotate the 4th lens assy and adjust the optical axis.