SEL85F14GM (FE 1.4 / 85 GM) (FE 85mm F1.4 GM)
4-11
4-4. IMAGE QUALITY CHECK/ADJUSTMENT
4-4-1. Adjusting Procedure
OK
OK
OK
NG
Optical System
END
Replace the Optical
Block For Service
NG
NG
OK
Adjust
the flange back
OK
NG
NG
NG
OK
OK
Drive System
Fig. 4-4-1
4-5. OPTICAL AXIS CHECK/ADJUSTMENT
Setting of the Flange Back (f’F) measuring instrument.
Equipment
• 1000 mm Collimator (110 V: J-6082-604-A/240 V: J-6082-604-B)
• Flange Back Tester (J-6082-606-A)
• A-mount Attachment (J-6082-607-A)
• E-mount Attachment (J-6082-798-A)
• Flange Back Gauge (43.50 mm) (J-6082-608-A)
• Extension Jig (47.00 mm) (J-6082-797-A)
• Camera (General E-mount digital single-lens reflex camera)
Preparations
1. Set the equipment as shown in the Fig. 4-5-1.
Flange back gauge (43.50 mm)
A-mount attachment
Objective lens (10x)
Dial Gauge (Min. scale: 0.01 mm)
Scale ring
Eyepiece lens (7x)
Eyepiece ring
Fig.
4-5-1
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 sharpest.
3. Attach the flange back gauge (43.50 mm) securely to the A-mount attachment and hold them together.
4. While applying light to the flange back gauge, turn the focusing knob of the flange back tester so that fine scratches are the sharpest.
Note:
Turn the knob in the direction of the arrow of Fig. 4-5-2 for correct reading.
Focusing knob
Focus on fine lines on the surface.
Always turn the knob in the arrow
direction for correct reading.
Fig.
4-5-2
5. Turn the scale ring of the dial gauge until the long pointer indicates “0”.
Note:
This position is the flange back (f’F) = 43.50 mm.
Memorize the position of the short pointer.
