Cleaning
21
NOTICE
•
Have your equipment ready before starting the cleaning
process.
•
To determine the level of contamination, use a bright
lamp or bright daylight and change the angle of view of
the surfaces from normal to grazing incidence.
•
Always clean the barrel surface or the frame/mount first.
•
When cleaning mounted optics or frames, avoid that
cleaning agents are drawn into narrow spaces near
the retaining rings, etc., due to capillary forces. Use
moistened, but not soaking wet tissues.
•
Use manual air blowers and clean antistatic brushes.
•
Place the lens on a clean, soft surface or a clean ARRI
Optics Cleaning Cloth.
•
It may be difficult to clean an optical surface without
streaks and non-volatile residues when the relative
humidity exceeds 65%.
•
Always store your optics in the provided containers with
protective caps on when not in use. If not stored in a
container, store the lens with the optical surfaces upright
in a clean environment and protective covers on to limit
contamination.
Recommended Cleaning Agents
Use cleaning agents suitable for dielectric coated precision
optics to avoid streaking, non-volatile residues, or damaging
optical elements. Prepare three different liquids in spray or drop
dispensing bottles:
1 A neutral window detergent.
2 Deionized distilled water.
3 Spectroscopy grade isopropyl alcohol.
Always use these liquids in this sequence when cleaning.
