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David Busch’s Canon® EOS M Guide to Digital Photography by Lee Sheldon

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Cleaning Your Sensor

There’s no avoiding dust. No matter how careful you are, some of it is going to settle on your camera and on the mounts of your lenses, eventually making its way inside your camera to settle in the vestibule. As you take photos, dust can eventually come to rest on the anti-aliasing filter atop your sensor. There, dust and particles can show up in every single picture you take at a small enough aperture to bring the foreign matter into sharp focus. No matter how careful you are and how cleanly you work, eventually you will get some of this dust on your camera’s sensor. Some say that CMOS sensors, like the one found in the EOS M, “attract” less dust than CCD sensors found in cameras from other vendors. But even the cleanest-working ...

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