7.4.2-4. 1st Lens Frame Adjustment
1. Rotate Zoom Ring (Repair Lens) until fully TELE side.
2. Set General-Purpose Camera as next and Focus Subject in centre using MF Ring.
- Mode Dial : Aperture-Priority AE Mode
- Focus : MF
- ISO : 200
- OIS : OFF
- Aperture : Full Open (Set aperture to
F5.6 in TELE
side)
3. Adjust the modulation transfer frequency by rotating the
2 Adjustment Pins
with Torx Driver (RFKZ0609),
so that its value becomes within specification.
Specification : The value indicated on the "
Resolution spec with modulation transfer frequency
" TELE Part.
Observation point : Centre and four corners (Angle of view 0.7 and four corners on the Mark 4 circle)
4. Rotate Zoom Ring of Repair Lens to fully
WIDE
end, then set the aperture to the Maximum aperture
(F3.5).
5. Adjust the modulation transfer frequency by rotating the
2 Adjustment Pins
with Torx Driver (RFKZ0609),
so that its value becomes within specification.
Specification : The value indicated on the "
Resolution spec with modulation transfer frequency
" WIDE Part.
Observation point : Centre and four corners (Angle of view 0.7 and four corners on the Mark 4 circle)
5. If not within spec, repeat the adjustment from the above step 1.
(If not within spec more than five times, implement the re-assembly and re-exchange of replacement parts.)
Since the pins/lens are sensitive, rotate them little by little. ( About 5 - 30 degrees)
Adjustment Pin
1st Lens Frame
Adjustment Pin
Adjustment Pin
1st Lens Frame
Torx driver (RFKZ0609)
0.7FA
TELE
WIDE
0.7FA
Resolution spec with modulation transfer frequency
S
：
Concentric circle
（
lp/mm
）
M
：
Radiation
（
lp/mm
）
S
：
more than 80
Centre
M
：
more than 80
S
：
more than 80
M
：
more than 80
S
：
more than 80
M
：
more than 80
S
：
more than 80
M
：
more than 80
S
：
more than 200
M
：
more than 200
S
：
more than 100
Centre
M
：
more than 100
S
：
more than 100
M
：
more than 100
S
：
more than 100
M
：
more than 100
S
：
more than 100
M
：
more than 100
S
：
more than 160
M
：
more than 160
30
