SEL90M28G (FE 2.8/90 MACRO G OSS) (FE 90mm F2.8 Macro G OSS)
4-8
3. After adjustment is completed, “FB ADJUSTMENT OK” is displayed.
Fig.
4-3-26
4. When the ENTER key is pushed, recording the adjustment data and releasing from adjustment mode are performed automatically and after the
process has finished the message “FINISHD” is displayed.
4-4. IMAGE QUALITY CHECK/ADJUSTMENT
4-4-1. Adjusting Procedure
Replace the Optical
Block For Service.
Image Quality
Adjust the
resolving power
(partial blur).
section 4-6
NG
Check the
photographic/projective
resolving power.
section 4-5
OK
Check the
photographic/projective
resolving power.
section 4-5
OK
END
Focus
Adjust
the flange back.
NG
Fig.
4-4-1
4-5. PHOTOGRAPHIC/PROJECTIVE RESOLVING POWER CHECK
4-5-1. Photographic Resolving Power (Partial Blur) Check
Equipments and Tools
• Resolving power check chart (Note)
• Camera (ILCE-5000)
Note:
Prepare the resolving power check chart according to the procedure shown below.
Download the [Focus-Chart_A3.pdf].
2. Print the [Focus-Chart_A3.pdf] sized by 100%.
(1) Preparations
1. Set the Shooting Mode to the Aperture Priority mode and set the f-stop value to the minimum (open).
2. Set the camera at a shooting distance of 2400 mm (imager surface).
3. Focus to make the chart aligned equally in all directions.
533 mm
400
mm
Fig. 4-5-1
(2) Checking Method
1. Set to manual focus on status that the “(1) Preparations” condition.
2. Focus and shoot with self timer.
3. Keep focusing as step 2, change the object distance to 2300 mm and 2500 mm, then shoot two times with self timer.
4. Check the three images to see if the resolution of the patterns in four corners meets the standard shown in Fig.4-5-2.
Note:
Check if the patterns on the four corners are visually as the same resolution.
* Use Adobe Photoshop to check the image resolution.
Near the limit
*
Check the five patterns in center and four corners at the same magnification.
OK
OK
NG
NG or out of focus
Fig.
4-5-2
4-4-1. Adjusting Procedure
