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Canon EOS 40D Guide to Digital Photography by David D. Busch

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Avoiding Dust

Of course, the easiest way to protect your sensor from dust is to prevent it from settling on the sensor in the first place. Some Canon lenses come with rubberized seals around the lens mounts that help keep dust from infiltrating, but you’ll find that dust will still find a way to get inside. Here are my stock tips for eliminating the problem before it begins.

  • Clean environment. Avoid working in dusty areas if you can do so. Hah! Serious photographers will take this one with a grain of salt, because it usually makes sense to go where the pictures are. Only a few of us are so paranoid about sensor dust (considering that it is so easily removed) that we’ll avoid moderately grimy locations just to protect something that is, when ...

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