That is what we write in manuals:
Cleaning Method for the Optical Part for sensors with input window or sensor glass.
This cannot be used for cameras that do not have a protective glass in front of or on the sensor.
In principle every cleaning method bears the danger of damag-ing an optical surface.
Therefore clean only if it is strictly necessary.
As a first step use dry air to blow out dust particles. Avoid strictly to wipe on a dry glass surface.
In case dirt cannot be removed by blowing, use special optical cleaning fluids. Adequate fluids for optical surfaces are: pure dehydrogenated alcohol, pure acetone or cleaning fluids avail-able in photo shops. Use a soaked cotton tip and take care to wipe only on glass surfaces, avoiding contact to metal surfaces, e.g. C-Mount thread, otherwise microscopic dirt and metallic chips are released, causing irreparable scratches on the glass surface.
Never use aggressive cleaning substances, e.g. benzine, spirit, nitro solvents, etc. commonly found in labs. Such substances may destroy or damage the surface on which they are applied.
Hint
The best is to avoid any dirt on optical parts, e.g. by replacing immediately the protection cap when removing the objec-tive lens. Do not leave the camera’s optical input window open, without lens or protecting cap.
Our warranty does not cover damaged optical surfaces caused by improper cleaning methods.