Perhaps not yet, but the handwriting might be on the wall…How is a digital camera different from a film camera? What are pixels and why are they important? What’s the difference between optical and digital zoom? What advantages do digital cameras have compared to film cameras? Let’s address these and other questions as we discuss digital camera technology.First a short history and overview of digital imaging…The technology began with television in the early 1950’s when researchers discovered how to convert video images to electrical signals for storage on magnetic tape. In the 1970’s electronic still photo cameras were developed. These employed the first generations of solid-state image sensors. By the late 1980’s megapixel sensors were introduced – the technology that paved the way to today’s modern digital cameras.Fundamentally, film and digital cameras do the same thing. Both utilize camera lenses to focus photographic images on a light sensitive medium where they are stored for later retrieval. But the way each camera does this is radically different.Instead of capturing the image on film that must be developed and printed, digital cameras measure light and color characteristics using photodiodes built into a sensor – either a Charged Coupled Device (CCD) or Complementary… Read full this story
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