Dust prevention techniques for cine e mount lenses

Film lens dust prevention requires special attention to the sealing of the mount, environmental protection, and regular cleaning and maintenance. The following are key measures:
Checkpoint sealing and transportation protection
Dust cover usage: It is recommended to use a dust cover during transportation and ensure that the lens is tightly attached to the body mount to prevent dust from entering the internal structure through gaps.  ‌
Sealed design: Some high-end movie lenses (such as Canon CN-E series) are equipped with a sealed structure at the factory, which can effectively block external dust from entering.  ‌
Extreme environmental protection
Desert/sandstorm environment: Wrap the lens with plastic wrap before shooting, and clean the checkpoint with air blowing during shooting intervals to avoid sand accumulation.  ‌
High humidity environment: Use a moisture-proof box or place desiccants during storage to prevent mold growth.  ‌
Key points of daily maintenance
Cleaning standards:
Use specialized air blowing to keep the lens surface clean and avoid blowing directly with the mouth (saliva may corrode the coating).  ‌
When cleaning lenses, use waterproof and oil resistant coated wiping paper to reduce fingerprint and stain adhesion.  ‌
Precautions
Avoid using the lens directly in low or high temperature environments, as sudden temperature changes may cause internal lubricant failure or lens deformation.  ‌