Sony SAL28F28 Service Manual ▷ View online
4-2
SAL28F28 (2.8/28) (28mm F2.8)
Note 1:
Personal Computer (PC)
(Color Calculator 2 installed)
OS:
Windows2000 Professional/XP
MEMORY:
40 M Byte or more recommended
Hard disk free area: 15 M Byte or more recommended
USB terminal:
Standard equipment
Graphics:
32,000 colors or more recommended VGA monitor
Note 2:
Attach the chart to the 1000 mm collimator as shown in Fig. 4-1-2.
Fig. 4-1-2
Note 3:
Connect the variable transformer (Output voltage:
AC 100 V
) to the lens test projector.
Align the marks
1000 mm collimator
Chart
4-3
SAL28F28 (2.8/28) (28mm F2.8)
4-1-2. Lens Adjustment Program
The lens adjustment program is required for the following check/adjustment.
4-5. LENS ROM CHECK
Prepare/start the Lens adjustment program with the following steps.
Equipment
• Personal Computer (PC)
• Camera DSLR-A100
• USB Cord With Connector
• Lens Adjustment Program
Note:
Lens Adjustment Program is downloadable from the ESI homepage.
1. Installation of the Lens Adjustment Program
For installation of the lens adjustment program, refer to the link “• Preparing the DSLR-A100 adjustment program” described on the
top cover of the camera DSLR-A100 service manual “9-852-130-51”.
Note:
Store the lens adjustment program “LensAdjustment.exe” and related file “AlphaLensAdjust.txt” in the folder that contains
the DSLR-A100 adjustment program “DSLRadj_cs.exe”.
2. Start the Lens Adjustment Program
1)
Connect the camera and PC with the USB cord with connector.
2)
Set the mode dial of camera to “M”.
3)
Turn the POWER switch of the camera to OFF, then turn the POWER switch to ON while pressing the shutter button halfway down
with pressed the
button of controller keys and MENU buttons.
4)
Check that the remaining number of recordable images on the LCD monitor is “BBBB”.
Note:
When “BBBB” is displayed, the camera activates in the adjustment mode.
5)
Start the lens adjustment program “LensAdjustment.exe”.
4-4
SAL28F28 (2.8/28) (28mm F2.8)
4-2.
APERTURE DIAMETER CHECK/ADJUSTMENT
4-2-1. Aperture Diameter Check
Note:
Perform the aperture diameter check in the state of the Fig.4-2-1 (only the G1 stopper was removed), or completion of assembling.
Fig.4-2-1
Equipment
• Luminance Box
• Camera DSLR-A100
• AE Master Lens
• Compact Flash (CF) Card (For image saving)
• Personal Computer (PC)
(Color Calculator 2 installed)
1. Preparations
Note:
Confirm the checking lens by complete. (The adjustment of focus brush is completed.)
1)
Install the CF card to the camera.
2)
Set the equipments, camera and master lens as shown in Fig.4-2-2.
Fig.4-2-2
3)
Shoot the images under the following conditions and save them.
Note:
Shoot the center of the luminance surface three times with the master lens and checking lens.
Setting of Luminance box:
Luminance:
EV12
Setting of Lens:
Focus:
Infinity end
Setting of 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
G1 Stopper
Luminance box
Luminance: EV12
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
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
Focus: Infinity end
Focus: Infinity end
Shoot the center of the luminance surface
Ver. 1.3 2008.01
The changed portions from
Ver. 1.2 are shown in blue.
Ver. 1.2 are shown in blue.
4-5
SAL28F28 (2.8/28) (28mm F2.8)
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2. Checking of Image
Note:
Check the image of both master lens and checking lens.
1)
Start the Color Calculator 2.
Fig.4-2-3
2)
Read the image from the file menu.
Fig.4-2-4
3)
Set the Color Calculator 2 as follows.
Measured value display (Display menu): RGB+L*a*b*
Measuring method (Display menu):
Center Single Area
Fig.4-2-5
Color space (Edit menu): sRGB
Fig.4-2-6
Area size for calculate (Edit menu
→Option): 256×256 Pixels
Fig.4-2-7
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