Angenieux OPTIMO 30-72 A2S Manuel Utilisateur page 54

8.2 REPLACING THE ENGRAVED FOCUS RING
Proceed as following to swap the engraved focus ring from feet to meters
(or vice versa):
- Set the engraved focus ring (24 or 25) at the infinity end stop.
- Draw a mark on the focus witness mark ring (23) at the infinity line.
(Picture 20)
- Unscrew the 3 engraved focus ring screws (26): to access these 3 screws,
turn the engraved focus ring (24 or 25) to make the screws successively
appearing in the window of the focus witness mark ring. (21)
- Remove the lens bracket. (5) (Picture 21)
- Remove the engraved focus ring. (24 or 25) (Picture 22)
Picture 20
Figure 20
54 OPTIMO 30-72 A2S 8 - ENGRAVED FOCUS RING REPLACEMENT I REMPLACEMENT DE LA BAGUE GRAVÉE DE MISE AU POINT
Picture 21
Figure 21
- Install the new engraved focus ring. (24 or 25) (Picture 23)
- Turn the engraved focus ring (24 or 25) to align the infinity line with the
mark done before on the focus witness mark ring (23) (Picture 23) and
tighten the first visible screw. (26)
- Turn the engraved focus ring (24 or 25) to install the 2 others screws. (26)
- Check the alignment between the infinity line with the line done before
on the focus witness mark ring (23) and install lens bracket. (5)
Picture 22
Figure 22