SAL50F14Z - Sony Digital Camera Service Manual (repair manual). Page 23

4-9

SAL50F14Z (Planar 1,4/50 ZA) (Planar T*50mm F1.4 ZA SSM)

Shoot images with the lens to be tested and the AE master lens under the following conditions (Note 1), and compare the images to check 
the error amount (Note 2).
Note 1:

 

・

Shooting magnification (60, 40, 20 times)

 

・

Chart for checking the depth area of image-formation (tilting chart 2 types)

 

・

Defocus value  0 

±

 10 

μ

m

The higher the magnification, the focusing error amount becomes the bigger. Therefore, it is easy to judge of result.

 

If the error amount is outside of the range, perform  4-10-4. Focusing Error Amount Adjustment (Write 

⊿

SB) .

•  Chart for checking the depth area of image-formation (40, 60 times)

Acquire the  Chart_for_checking_image_formation_40x_60x_(E).zip  from the each HQ.

•  Chart for checking the depth area of image-formation (20 times)

Acquire the  Chart_for_checking_image_formation_20x_(E).zip  from the each HQ.

• Software

Acquire the following either software from the each HQ.

Software

Camera

DSLR-A700 Defocus checker

DSLR-A700

Defocus Checker 2

SLT-A37/A57/A58/A65/A77/A99

 

•  Camera (One of DSLR-A700, SLT-A37/A57/A58/A65/A77/A99)
• HASP key
•  Personal Computer (supporting Seus-EX)
•  AE Master Lens

J-6082-597-A: 50 mm/F1.7

• Illumination

J-6082-642-A: Fluorescent Lamp (specified color rendering)
J-6082-643-A: Fluorescent Light Stand (high-frequency lighting type)

• Memory Card
• Tripod

1. Preparation
1)  Insert the memory card to the camera.
2)  Set the camera and chart for checking the depth area of image-formation as shown in Table 4-6-2, Fig. 4-6-1 and Fig. 4-6-2.

Shooting distance is obtained by shooting magnification and focal length as following.

 

[Shooting distance] = [shooting magnification] 

×

 [focal length]

Select the combination according to the Table 4-6-2 Guidelines table.

  If the shooting distance using a 60 times chart cannot be ensured indoors, temporarily use a combination of 40 times chart or 20 times chart.

3)  Connect the camera and personal computer (when using HASP Key) with USB cable and activate Defocus Checker 2 or DSLR-A700 

Defocus checker.

 

In case Defocus Checker 2 is used, click [Connect] to set connection mode.
Note:

  If an abnormal phenomenon appears during installation of the teleconverter used by the user, install the user s teleconverter.

 

Selection of 
Shooting magni-
fication

AF Assist Chart (Size) 
Refer to Fig. 4-6-1.

Applicable Cam-
era (image sensor 
type)

Applicable Lens

Calculation example of shoot-
ing distance 
[shooting magnification] 

×

 

[focal length] = [shooting dis-
tance]

60 times 
(middle distance)

AF Assist Chart 60 Times 
(200 mm 

×

 100 mm)

APS-C size type 

All

60 times 

×

 50 mm = 3000 mm

40 times 
(middle distance)

AF Assist Chart 40 Times 
(132 mm 

×

 66 mm)

35 mm full size type

All

40 times 

×

 50 mm = 2000 mm

20 times 
(short distance)

AF Assist Chart 20 Times 
(66 mm 

×

 33 mm)

both size available

•  Macro lens
•  Lens with a focal 

length of more 
than 300 mm

20 times 

×

 300 mm = 6000 mm

 

(100 mm)

(66 mm)

(33 mm)

(200 mm)

(132 mm)

(66 mm)

AF Assist Chart
60 Times

AF Assist Chart
40 Times

AF Assist Chart
20 Times

 

Camera Setting

Exposure mode
Focus Mode
Focus Area

Image Size
Super SteadyShot
Drive Mode

: A (Open Aperture)
: MF
: Spot Focus Area
  (Fixed at the center)
: L
: OFF
: Self-timer

Shooting distance

Set the optical axis to the center 
of the AF assist chart.

AF Assist Chart
(60 Times/40 Times)

Chart for checking the depth area of image-formation
(60 Times/40 Times)