WIldlife Photography hints and tips - Preventing and dealing with dust on the digital camera sensors

This is an enlargement of a portion of sky in an image which shows the effect of dust on the sensor of the camera. Does this look familiar?
Camera manufaturers do not recommend using sticky cleaning pads, and having a camera professionally cleaned is an expensive business, but is all totally avoidable if you follow a few simple precautions that I have described in my wildlife photography hints and tips.

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Removing and preventing dust on digital camera sensors