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Structural Weakness - Color Shift
When using a neutral density higher than 450, cross-like color
variations may occur. Structurally this problem cannot be eliminated
due to the 2 layers of polarizing film.
Upkeep
To clean off dirt from glass, add a small amount of lens cleaner to a
lens cloth or lens paper, and wipe the lens as if drawing a circle.
When glass is clean, wipe it dry with lens cloth, making sure that no
lens cleaner remains on the glass.
When filter is not in use, place it in supplied case, and store away
from direct sunlight, and very hot and humid locations.
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