What Is Camera Dust and How To Get Rid Of It - Digital Photo Secrets: "f you own a digital SLR, you’ve probably started to notice something on your photos that wasn’t there before. Have you ever gotten a photo full of little black specks or smudges and wondered how they got there? If you clean your lens religiously and wonder how this could happen to you, then you are about to be introduced to the world of image sensor dust. A lot more goes on inside your camera than you think."
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