Digital cameras were introduced to the world during the late 1980s and quickly revolutionized the art of photography as we knew it. They are basically battery-operated cameras that are filmless and operate by focusing light from the lens onto a charge coupled device (CCD).
The light is converted into electrical signals by the camera. The information is then projected onto a grid of pixels, with a color and brightness value being designated to each pixel.
When these pixels are combined and joined together they produce a finished image.
These photos are then stored inside of the camera’s internal memory bank on a small floppy disk or removable memory card. You can see the stored photos you have taken by looking at the camera’s viewing screen.
A digital camera will then allow you to download the images onto a computer for storage and/or printing purposes. You can also download them onto memory devices and a handful of other storage gadgets and devices.
You may also be able to print the images directly from the camera to a printer as well as viewing them on a TV or mobile phone, etc. 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.
The cameras come in a variety of styles and models, including underwater. Because of this they can range in price from about $20 up to several thousands.