Question
Is it safe and a good idea to clean DSLR lens using computer dust removal, which has powerful air pressure ?
Answer
I've not seen this recommended for a number of reasons:
- The high-pressure air can cause dust to move from a bad place to a worse place (as opposed to being removed altogether).
- The condensation caused by the pressure drop & cooling of the compressed air causes stuff to get frosty. This should be temporary, but isn't likely to help in the short run.
- You really don't want any of the liquid propellants used to create pressure in the can to stick to anything inside your camera.
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