JAA78351-R.3597.A
- L21・AF28-200/3.5-5.6G -
Focal length
Standard (mm)
28 mm
0.00
～
+ 0.30
50 mm
0.00
～
+ 0.60
85 mm
0.00
～
+ 0.60
135 mm
0.00
～
+ 0.60
200 mm
0.00
～
+ 0.70
Using the F.F.D adjustment software, input each measured value and calculate each washer’s adjustment thickness in order to
display them on the PC screen.
How to adjust
●Start up the F.F.D adjustment software J18357 and enter each measured value in accordance with the instructions on PC
displays.
According to the calculated results on the display, adjust each washer's thickness of the first lens group's washer (#186),
the second lens group's washer (#135) and the mount's washer (#178).
F. F. D adjustment (Back focus)
Cover ring
#105×3
#89×2
Cover ring
