Information on Digital Cameras and Downloading Pictures
In the late 1980s, digital cameras were introduced and revolutionized the art of photography. Digital cameras are battery operated, filmless cameras that work by focusing light from the lens onto a charge coupled device (CCD). The device then converts the light into electrical signals. The data is projected onto a grid of pixels, and each individual pixel is designated a color and brightness value. When all of the pixels are joined together they form the finished image. The images are stored in the camera's internal memory bank on a small removable memory card or floppy disk. You can look at the stored images on the camera's viewing screen.
You can download your photos onto a computer for printing or storage purposes. You can also print the photos directly from the camera to a printer and can also view them on a TV screen. The size of the memory card will dictate how many photos you can save.
Most digital cameras also have several resolution and file type settings with low-resolution images taking up less memory. High-resolution photos use more space, but offer better quality for printing or enlarging. Most digital cameras offer automatic focusing, flash and exposure controls with manual options. They range in price from about $20 to several thousand.