DIGITAL PHOTOGRAPHY AND ITS MARKETING STRATEGIES
Digital Photography (one of the several forms of digital imaging) refers to a form of photography in which cameras are used which contain arrays of electronic photo detectors are used to capture the pictures which are focused by a lens as opposed to an exposure on photographic film. The images clicked are digitized and stored as a computer file ready for further digital processing, viewing, publishing or printing.
Earlier, photographs were made by exposing light sensitive photographic film and paper, processed in liquid chemical solutions to develop and stabilize the image. Computer tomography scanners and radio telescopes can also create digital images.
Evolution
In the late 1990s the first consumer digital
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The 2 main types of sensors include the Charge-couped devices (CCD), in which photocharge is shifted to a central charge-to-voltage converter, and CMOS or active pixel sensors.
Performance Metrics
Typically listed in megapixels, millions of pixels are one of the major factors, though it is the most heavily marketed figure of merit. The system which processes the image and turns the raw data into a color- balanced and pleasing photograph is more critical, this is why some 4+mp cameras perform better than high end cameras.
Also a large sensor with the same number of pixels generally produces a better image than a smaller one.
The most important difference is an improvement in the image noise, which is one of the advantages of a DSLR.
• Lens quality: resolution, distortion, dispersion
• Capture medium: CMOS, CCD, the film negatives, reversal film etc.
• Capture format: pixel count, digital file type (RAW, TIFF, JPEG), film format(135 film, 120 film, 5x4, 10x8).
• Processing: digital and / or chemical processing of 'negative' and 'print'.
IMPACT ON THE MARKET AND THE