Cameras include different forms of portable image recording devices: Film Cameras, Digital Cameras, and Camcorders. Film Cameras include traditional film-based cameras such as point-and-shoot and professional SLR models, along with their accessories like film, darkroom equipment, and lighting equipment. Digital cameras also come in point-and-shoot and SLR models, and are further classifed by their megapixels. Camcorders, either DVD, mini-dv, or hard drive based, can take still photos along with video movies.
Digital cameras capture and store photos electronically, instead of using film. Images are captured on a light-sensitive grid, and the information is stored on small memory cards like Compact Flash or SDHC cards instead of film.
Most professional photographers now use digital cameras, and they have a number of advantages over film cameras.
First, digital cameras have LCD screens on back that let you see each picture right after you take it. If Aunt Martha had her eyes closed, you'll know in time to take another shot. And if you're trying to learn the finer points of photography, there's nothing like immediate feedback to tell you whether you've got it right.
Second, memory cards are much easier to use than film. They aren't damaged by exposure to light, they don't require developing, and if you forget about the pictures on the card for a couple months, you won't end up with washed-out images.
Third, storing your pictures on your computer means that they take up very little space, and it's easy to flip through them without bending the corners. Just be sure to make a backup!
Fourth, many digital cameras can record movies, some with sound. Whether you're rafting down the Mekong or watching your child's first steps, there are some times when it's great to have video.
Printing pictures from your digital camera is easy — just bring your memory card to any photo lab. If you want to print pictures at home, you can buy a photo printer that will print very nice images. (Many photo printers can read memory cards, so you just plug in the card and hit print.)
If you keep your pictures on your computer, and you want professional-quality prints, you can order prints from online photo labs like Snapfish or Shutterfly. Upload the pictures, tell them what you want, and your prints will magically arrive in the mail.
There are several types of digital cameras. Professionals use single-lens reflex (SLR) cameras with big detachable lenses. Most consumers use simple point and shoot cameras. And for quick snapshots anytime, small cameras like keychain cameras fit the bill.
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