Chapter 3 Digital Photography

The digital photography era began when an electronic imaging sensor replaced film within the camera. The sensor is a device that captures light and converts it into an image. Sensors are made up of millions of photoelectric devices, which convert light into an electrical signal and ultimately the image. Currently there are two types of sensors, the CCD (charge coupled device) and the CMOS (complementary metal-oxide-semiconductor) sensors.

The sensor’s electronic signals are processed and sent to the camera’s storage media such as a compact flash (CF) or secure digital (SD) card. Images stored on the camera can be saved in a variety of file types, dependent upon the photographer’s choice. Examples of common file types ...

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