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What is Image Sensor

An image sensor is a device that allows the camera to convert photons – that is, light – into electrical signals that can be interpreted by the device. The first digital cameras used charge-coupled devices, facilitating movement of the electrical charge through the device so it could be modulated.

Performance

An image sensor or imager is a sensor that detects and conveys information used to make an image. It does so by converting the variable attenuation of light.

Exposure-time control

Exposure time is controlled in a camera by shutter speed, and the illuminance depends on the lens aperture and the scene luminance. Slower shutter speeds (exposing the medium for a longer period of time), greater lens apertures (admitting more light), and higher-luminance scenes produce greater exposures.

Color Seperation

A means of dividing a full color photograph into four separate components, corresponding to the four primary colors used in process color printing—cyan, magenta, yellow, and black.

Conclusion

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