Image Sensor: A digital camera's image sensing element, or as it's often referred to, its image sensor. The image sensor's job is to convert light to electrical energy, which can then be stored in digital form in the camera's memory. An image sensor's photo-capturing power is measured in pixels, and will usually be seen expressed in megapixels. Sometimes, you may see two slightly different pixel counts listed for the same camera's sensor. These numbers represent effective pixel count and actual pixel count. The two most commonly found technologies used to capture digital images in today's cameras are CCD (charge coupled device) and CMOS (complementary metal oxide semiconductor) image sensors. Although both types have their unique strengths and weaknesses, neither one is inherently superior to the other. You can expect high-quality digital photographs from cameras using either technology.

 

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Image Sensor: A digital camera's image sensing element, or as it's often referred to, its image sensor. The image sensor's job is to convert light to electrical energy, which can then be stored in digital . . . View Full Definition

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