January 2013
Intermediate to advanced
479 pages
19h 10m
English
Content preview from Langford's Advanced Photography, 8th EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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6 Image sensors
The digital image sensor is considered in many ways the ‘heart’ of an image capture device. These silicon chips are about the size of a fingernail and contain millions of photosensitive elements called photosites. They convert light imaged through the camera lens into electrical signals which are then processed to form a two-dimensional image representing the scene being captured. In this chapter the operation of a digital image sensor will be described. You will learn how photons striking a sensor are converted to electric charge. A photon is a single packet of energy that defines light. To capture an image, millions of tiny photosites are combined into a two-dimensional array, each of which transforms the light from one point ...
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