A persistent challenge in semiconductor fabrication is that chips much larger that 1 cm 2 are expensive to produce without defects, confining large image sensor formats compatible with traditional 35 mm optics to professional and prosumer markets.Īs a product category at retail, apart from the enthusiast digital single-lens reflex camera (DSLR) category, most digital cameras now come with an electronic viewfinder, which approximates the final photograph in real time, which can also review and adjust (or delete) a captured photograph within seconds, making this a form of instant photography, as compared to most photochemical cameras from the preceding era. An early semiconductor milestone was the advent of the charge-coupled device (CCD) image sensor, first demonstrated in April 1970 the field has advanced rapidly and continuously ever since, paced by concurrent advances in photolithographic fabrication. ![]() ![]() The modern era in digital photography is dominated by the semiconductor industry, which evolved later. In the space industry, where much of the technology originated, it pertains to highly customized, embedded systems combined with sophisticated remote telemetry.Īny electronic image sensor can be digitized this was achieved as far back as 1951. The digitized image is stored as a computer file ready for further digital processing, viewing, electronic publishing, or digital printing.ĭigital photography spans a wide range of applications with a long history. Digital photography uses cameras containing arrays of electronic photodetectors interfaced to an analog-to-digital converter (ADC) to produce images focused by a lens, as opposed to an exposure on photographic film.
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