Cleaning 19°, 26°, 36°, And 50° Glass Lenses - ETC Source Four Assembly Manual

C l e a n i n g 1 9 ° , 2 6 ° , 3 6 ° , a n d 5 0 ° g l a s s l e n s e s
Step 1:
W A R N I N G :
Step 2:
14
Dampen a clean, lint-free cloth with vinegar or household ammonia. You may
use water, but it leave spots. You can remove the spots by polishing the lens
gently with a clean, dry cloth.
Never use glass and window cleaner or any abrasive material to clean the
lens. Glass and window cleaners will stain the lens surface. Abrasive
materials (such as steel wool) will damage the surface of the lens.
Starting from the center, gently wipe the lens.
Source Four Assembly Guide