Introduction:

A digital camera is an electronic device that transforms images into electronic information. Many digital cameras can transfer data by connecting directly to a computer. Early cameras used the PC serial port, Now USB is the most commonly used method while some use a FireWire port or Bluetooth. Some cameras can connect with computer networks wirelessly through Wi-Fi.
 
Here are 10 aspects to look for while purchasing a digital camera:

Part-1: Price, Resolution, and viewfinder:



1. Price: This can be anywhere from $100 to $10,000 for a high-end professional camera. You can buy a camera with good resolution and options for under $600. Cameras with more manual control settings can be purchased for $600-2000 dollars which will usually suit serious amateurs.
2. Resolution: To print quality color photos at the standard film sizes 4"x6" or 5"x7" you will need a 1-2 megapixel camera. If you print as large as 8"x10", you will need a higher resolution of around 2-3 megapixels.
3. Viewfinder: Low-end digital cameras provide an optical viewfinder while expensive ones replace the viewfinder with an LCD (Liquid Crystal Display). It is good to purchase one with an LCD. Kodak manufactures digital cameras with quality displays. so, have a glance over them.

Part-2: Focus, storage, compression, and batteries:

1. Focus: Most cameras are either fixed-focus or autofocus which suits the average digital camera user. Everything from a few feet to infinity will be in focus with a fixed-focus lens. The only problem which comes with this is when shooting pictures up close. Autofocus will automatically bring-in anything in the center of the viewfinder into focus.
2. Storage: Many cameras come with a small memory card, but if you take lots of pictures or footage, it is a good idea to make sure you are supplied with enough memory, If not, Get to know how much a new 'decent' capacity memory card will cost for that particular model.
3. Compression: If you want the highest image quality, look for a camera that will let you save pictures in "CCD raw mode" that does not compress the image.
4. Batteries: It is essential to purchase a camera that accepts rechargeable batteries. Nickel Cadmium (NiCad), Nickel-Metal Hydride (NiMH) and Lithium-ion (Li-ion or LiOn) are the three types of batteries that are available. A camera will usually be capable of accepting only one or two kinds of batteries so make sure to find out what will suit you.

Part-3: Power Saving, Interface, and Video output:

1. Power Saving: Use a camera that accepts an AC adaptor to save battery power.
2. Interface: If you are interested in maximum speed then you should look for cameras and card readers that support FireWire.
3. Video Output: This can be extremely useful for presentations. If you need this, look for a camera with a video output terminal. It lets you display your output on a TV or projector.