The introduction of digital cameras marked a milestone in the development of photography. Digital cameras are very different from traditional film-based cameras. The cameras on the simple method based on exposure to a chemical known as photosensitive film camera to a scene that creates a printed image is also known as negative.
Digital cameras are far more advanced and the use of CCD (Charge-Coupled Device). CCD is an electronic device that generates an electrical charge when the 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 the film cameras used in the elderly. Digital cameras also have a smart sensor pixel digital fixed through it. To give an idea of the resolving power of these sensors, a sensor of 3702×2704 pixels with 10 million pixel camera offers a quality of 10 'megapixels'.
Megapixels can be considered as the number of points that each image is composed. 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 are moved leaving a trace. After the image of the form is passed through color filters which converts the image of the light signals into electrical signals analog. The analog signal is finally run through an analog-digital converter that produces the final image digitally.
The images are compressed and stored in memory chips. Digital cameras have many advantages including;
1. Provide user to review the pictures after taking them.
2. Easy transfer to computer and other devices.
Great memory 3. Ensure that it is never short of space.
4. Portability and good ergonomics.
Because of this, it seems that digital cameras are here to stay.
