Swab the decks

Ensure you've bought the correct size swab for your sensor. Manufacturers will list SLRs on their Web sites. If in doubt, go for smaller sizes as you'll be able to use more than one swab to cover the whole sensor. We used Eclipse swabs and cleaning solution, and our trusty Canon EOS 30D required size 2 swabs.

Take a clean swab and squeeze two to four drops of cleaning solution onto the end. Don't saturate the swab or you'll end up with excess solution on the sensor.

Place the swab at one side of the sensor and gently wipe all the way across in one smooth motion. Try and make sure you get into the corners and cover the whole surface of the sensor.

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