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THE BELOW PROCEDURE APPLIES FOR F32-F40-F50-F60-F75-F100-F135
- Unscrew and remove the front ring (1)
- Untighten and remove the six Philips screws (2). Pull out the front engraved ring (3)
- Untighten the seven Philips screws (6) without removing them. Pull out the focus ring (4)
- Replace the focus ring or flip it by 180° for feet or meter use and tighten the Philips screws (6) in contact
- Re-install the front engraved ring (3) and the front ring (1)
- Check and adjust the focus ring position to match the engraved distances and tighten uniformly the seven Philips screws (6)
- Tighten all the screws in contact with a removable threadlock
1
2
3
4
5
6
