Cleaning Image Sensors
Below are recommendations for cleaning the image sensor of cameras manufactured by The Imaging Source:
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Compressed Air: In most cases, compressed air is sufficient. However, some particles may be too stubborn to remove this way. Also note that standard compressed air (from cans or typical compressors) can introduce additional contamination, as it may contain other chemicals such as propellants, water, oil etc.
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Lens Cleaning Pen: Such tools are widely available in photography stores. They typically feature a retractable brush on one end and a cleaning tip on the other, which can effectively remove more persistent dirt and light residues such as fingerprints.
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Microfiber Cloth: A microfiber cloth can also be used, although access through the camera opening may be limited. In practice, a cotton swab can help apply the cloth more precisely.
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Alcohol: For best results, use optical-grade ethanol or isopropyl alcohol (≥99%), as lower-purity solutions may leave residue or streaks. Methanol-based cleaning fluids (e.g., Eclipse) may also be used, but we generally do not recommend them due to their toxicity.
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Combination of Methods: In some cases, a combination of the methods above may be necessary to achieve the desired result.
Note on Color Cameras: The sensor on a color camera is not directly accessible because of the infrared cut filter in front of it. If dust or condensation is present on the sensor, the camera must be returned for service.
Do not be overly concerned about contact with the sensor surface. The protective sensor glass is relatively durable. Only very hard materials such as glass, sand, or diamond can cause scratches during cleaning.