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FASTCAM-APX RS Hardware Manual
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6.3. Care of Lenses
The surface of photographic lenses has thin coatings that reduce unwanted reflections.
Extra care must be taken to protect these fragile coatings.
Protect the lens by installing a lens cap when you are not using the camera. Brush the
lens gently with a camel hairbrush or loosely folded piece of lens paper to remove dust
particles. For stubborn dirt use photographic lens cleaning solution and lens wipes.
Never rub the lens with direct pressure or drop cleaning solution directly on the lens
surface.