Camera Works
The introduction of digital cameras marked a landmark in the development of photography. Digital cameras are very different from traditional film-based cameras. Film cameras based on trust in the simple method of exposure of a chemical known as photosensitive film camera to a scene that creates a printed image also known as negative.
Digital cameras are far more advanced and the use of CCD (Charge-Coupled Device). CCD is a electronic device that creates an electrical charge when photons strike against a photosensitive material. This phenomenon is known as the photoelectric effect.
Digital cameras are equipped with chips, these chips can be CCD, CMOS (Complementary Metal Oxide Semiconductor), Foveon and others. These chips replace films used in older cameras. Digital cameras also have an intelligent digital sensor has pixels set through it. To give an idea of the resolving power of these sensors, a sensor of 3702×2704 pixels with more than 10 million pixel camera gives a grade of 10 'megapixels'.
Megapixels can be considered as the number of points that each image is composed of. The power of megapixel digital camera is directly proportional to the sharpness of images. Now, when the rays of light from a light source strikes against these mega pixels, which is excited leaving a trail behind. After the image of this form is passing through color filter that converts the image of the light signals into signals electrical analog. The analog signal is finally run through an analog to digital converter that produces the final digital image.
The images produced is compressed and stored in memory chips. Digital cameras have many advantages including;
1. Provide the user to review the images immediately after taking them.
2. Easy transfer to computer and other devices.
3. Great memory to ensure you never run out of space.
4. Portability and good ergonomics.
Because of this, it seems that digital cameras are here to stay.
About the Author:
Cooper is a budding blogger and online writer. Read his Reviews of Sony BDPS500 and Reviews of Griffin Evolve.
Article Source: ArticlesBase.com – How Does My Digital Camera Work?
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