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4-8

SAL1635Z2 (Vario-Sonnar 2.8/16-35 ZA SSM II) (Vario-Sonnar T* 16-35mm F2.8 ZA SSM II)

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After finishing  1. Projective Resolving Power (Partial Blur: WIDE) Adjustment  and  3. Projective Resolving Power (Partial Blur: TELE) 
Adjustment , if the partial blur is not improved, perform the following steps.

1. Preparations
Modify the following washers to make the partial blur adjustment washer.

Parts
Back washer 

2-899-280-2[] (t = 0.1 mm)

Back washer 

2-899-280-3[] (t = 0.2 mm)

Back Washer

Cut in this position

Partial Blur Adjustment Washer

2. Adjustment procedure
1)  Remove the rear light shield barrel and mount block assy in the finished state.
2)  Attach the partial blur adjustment washer to the position of partial blur symptom.

Thickness of partial blur adjustment washer should be within 0.2 mm. 

3)  Attach the rear light shield barrel and mount block assy, to return the finished state.
4)  Check to see that the partial blur is improved.

 

Partial Blur Adjustment Washer

Attaching example of the partial blur adjustment washer
(Attach the partial blur adjustment washer to the position of partial blur symptom.)

In this section, the check/adjustment of focus-shift, which arises from the change of the focal length by zooming, is described.

Equipment
•  1000 mm Collimator
•  Flange Back Tester
• A-mount Attachment
•  Flange Back Gauge (43.50 mm)
•  Adhesive bond (B-50)

1. Preparations
1) Perform 4-3-1 Preparations of  4-3. OPTICAL AXIS CHECK/ADJUSTMENT .

2. Focus-shift Check
1)  Set the zoom to the TELE end.
2) Set to 44.56 mm  by rotating the knob of flange back tester.
3)  Focus by rotating the focus ring from the near end side.
4)  Change the focal length and check that the flange back value at each focal length satisfies the specification below.
Note:

  Do not rotate the focus ring.

Focal Length f (mm)

Flange Back Value f F (mm)

16 to 35

44.48 to 44.64

5)  If the flange back value (f F) of the checking lens does not satisfy the specification in Table 4-5-1, perform  4-5-2. Focus-shift/Flange 

Back (f F) Adjustment .

3.  Flange Back (f F) Check
1)  Set the zoom to the WIDE end (16 mm) and the focus to the over infinity end and then check that the flange back satisfies the specifi-

cation.

2)  Set the zoom to the TELE end (35 mm) and the focus to the over infinity end and then check that the flange back satisfies the specifi-

cation.

Focal Length f (mm)

Flange Back Value f F (mm)

16 (WIDE end)

44.68 to 44.73

35 (TELE end)

44.85 to 45.11

3)  If the flange back value (f F) of the checking lens does not satisfy the specification in Table 4-5-2, perform  4-5-2. Focus-shift/Flange 

Back (f F)  Adjustment.

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SAL1635Z2 (Vario-Sonnar 2.8/16-35 ZA SSM II) (Vario-Sonnar T* 16-35mm F2.8 ZA SSM II)

1. Focus-shift Adjustment
1)  Remove the focus rubber ring.
2)  Set the zoom to the TELE end.
3)  Rotate the focus ring to over infinity side and by turning further from the infinity end set it at the position where the decentering roller 

(decentering, no decentering) can be seen through the hole for decentering roller.

4)  Loosen three screws fixing the decentering roller (decentering, no decentering).
5)  Set the zoom to the WIDE end and the focus to the over infinity end.
6)  Focus by rotating the knob of flange back tester. At this moment, read the flange back value.
7) Add 0.275  to the read flange back value. Then, rotate the knob of flange back tester so that this added value can be achieved.
 

Example) In case that the read value is 44.67: 44.67 + 0.275 = 44.945 (mm)

8)  Set the zoom to the TELE end and focus by changing the position of the 2nd lens block.
 

・

Change the position of 2nd lens block. (Shift the decentering roller or decentering roller (no decentering) along the lead groove.)

Do not rotate the decentering roller.

9)  Adjust by repeating steps 5) to 8) so that the focus at the WIDE end becomes equal to that at the TELE end.
 

Then, tighten the screws loosened in step 4).

10) After finishing the focus-shift and the optics axis adjustment, apply the bond (B-50) to the decentering roller (decentering, no center-

ing) and the 2nd lens holder.

 

Focus Rubber Ring

The Hole for Decentering Roller

2.  Flange Back (f F) Adjustment
1)  Set the zoom to the WIDE end and the focus to the over infinity end.
2)  Focus by rotating the knob of flange back tester. At this moment, read the flange back value.
3)  Calculate the amount of increase or decrease of back adjustment washer by the formula below, using the result derived from step 2).

Amount of increase or decrease of back adjustment washer (mm) =
Flange back f F (measured value) of focal length (16 mm) at over infinity end - 44.705 mm

・

In case that the amount of back adjustment washer is negative (-): Decrease thickness of the back adjustment washer.

・

In case that the amount of back adjustment washer is positive (+): Increase thickness of the back adjustment washer.

Part No.

Description

2-899-280-01

BACK ADJUSTMENT WASHER (t=0.05)

2-899-280-11

BACK ADJUSTMENT WASHER (t=0.07)

2-899-280-21

BACK ADJUSTMENT WASHER (t=0.1)

2-899-280-31

BACK ADJUSTMENT WASHER (t=0.2)

2-899-280-41

BACK ADJUSTMENT WASHER (t=0.5)

 

Connection Board

Rear Light Shield Barrel

Mount Block Assy

Rear Outer Block Assy

Back Adjustment Washer

4)  Adjust by repeating steps 1) to 3) until the flange back satisfies the specification.

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SAL1635Z2 (Vario-Sonnar 2.8/16-35 ZA SSM II) (Vario-Sonnar T* 16-35mm F2.8 ZA SSM II)

In this section, the check/adjustment of focus-shift, which arises from the change of aperture, is described.

Equipment
•  1000 mm Collimator
•  Flange Back Tester
• A-mount Attachment
•  Flange Back Tester (43.50 mm)
•  Aberration Measuring Cap 77 mm (1635) (Equivalent to F8)

1. Preparations
1) Perform 4-3-1 Preparations  of  4-3. OPTICAL AXIS CHECK/ADJUSTMENT .

2. Checking Method
1)  Set the zoom to WIDE end.
2)  Set the focus to infinity (index) or near infinity.
3)  Rotate the knob of flange back tester to achieve good focus, read the flange back value. (Make the value to Aw.)
4)  Set the aberration measuring cap (F8 equivalent, for WIDE) on the tip of lens as shown in the Fig. 4-6-1.
5)  Rotate the knob of flange back tester to achieve good focus, read the flange back value. (Make the value to Bw.)
6)  According to the result in step 3) and 5), calculate amount of focus-shift (F8 equivalent, for WIDE) using the following formula.

Focus-shift (F8 equivalent, for WIDE) (mm) = (result in step 5) (Bw)) - (result in step 3) (Aw))

7)  Set the zoom to TELE end.
8)  Set the focus to infinity (index) or near infinity.
9)  Rotate the knob of flange back tester to achieve good focus, read the flange back value. (Make the value to At.)
10) Set the aberration measuring cap (F8 equivalent, for TELE) on the tip of lens as shown in the Fig.4-6-1.
11) Rotate the knob of flange back tester to achieve good focus, read the flange back value. (Make the value to Bt.)
12) According to the result in step 9) and 11), calculate amount of focus-shift (F8 equivalent, for TELE) using the following formula.

Focus-shift (F8 equivalent, for TELE) (mm) = (result in step 11) (Bt)) - (result in step 9) (At))

 

Aberration measuring cap 77mm (WIDE or TELE)

 

F8 focus-shift (mm) at WIDE end (16 mm) = -0.09 to +0.11

 

F8 focus-shift (mm) at TELE end (35 mm) = -0.09 to +0.11

13) Considering the check result, perform  4-6-2. Focus-shift (Aperture (Amount of Spherical Aberration) ) Adjustment .

Perform  4-9-3. 

⊿

SB Check/ Write , using the lens adjustment program.

Equipment used
• Personal Computer
•  Lens Adjustment Program (ACSSM-S-VerXXX.zip)
•  Finished Inspection JIG II (AC 100 - 240 V)
•  Half Completion JIG

  Personal computer must have the condition that Windows VISTA/7 runs normally and USB is connectable.

  Acquire the Lens Adjustment Program (ACSSM-S-VerXXX.zip) from the each HQ.

  Please make the Half Completion JIG in each service station.

 

  For details of the jig making method, refer to  4-1-1. List of Service Tools and Equipment  Note 5.

1.  Saving Lens Adjustment Program (ACSSM-S-VerXXX.zip)
1)  Unzip the Lens Adjustment Program (ACSSM-S-VerXXX.zip)
2) Save ACSSM-S-VerXXX.exe  in an arbitrary folder.

The version of  ACSSM-S-VerXXX.exe  might be updated.

4-7-2. Connection of Finished Inspection JIGⅡ/Half Completion JIG and Starting of Lens Adjustment Pro-

 Confirm that 4-7-1. Installing the Lens Adjustment Program (ACSSM-S-VerXXX)  has been completed before this procedure is executed.

  In case of performing Finished inspection, be sure to perform in the condition that the lens is laid down (do not perform in the lens standing 

condition).

Equipment
• Personal Computer
•  Finished Inspection JIG II (AC 100 - 240 V)

  The cables and so on are not supplied as accessories.

•  Half Completion JIG
•  AC Cable (Sold on the Market)
•  RS232C Cable (D-Sub 9 Pins (Male with Securing Screws), D-Sub 9 Pins (Female with Securing Screws)) Straight Type (Sold on the 

Market)

•  USB to Serial Cable (D-Sub 9 Pins (Male)) (Sold on the Market)
•  M-BOX-JIG (J-6082-722-A) (Or the Jig supplied with Finished Inspection JIG (J-6082-645-A))
•  Lens Adjustment Program (ACSSM-S-VerXXX.zip)

1. Connection
 

Connect equipment and checking lens as shown in Fig. 4-7-1 or 4-7-3.
Note: 

ACSSM-S-VerXXX  cannot start up without the connection to the finished inspection JIG II.

• Final

 

Finished Inspection JIG II

AC Cable

D-sub 9 Pins: Male

D-sub 9 Pins: Female

RS232C Cable

USB to Serial Cable

Lens

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SAL1635Z2 (Vario-Sonnar 2.8/16-35 ZA SSM II) (Vario-Sonnar T* 16-35mm 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 Front Ornament Tube, Front Lens Barrel 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

Encorder 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. 4-7-4).

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 does not 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. 4-7-5).

 Example: SAL1635Z2

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