Thursday, August 11, 2011

Is it safe to clean SLR lenses with pressurized computer dust cleaners?

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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