First of all, decide on the type of camera you want. If you are looking to buy a camera for high-end photos, buy a larger camera with all functions such as manual focus and changeable lens. In case you are looking for a user-friendly camera, go for compact or ultra-compact camera. You can have these types of cameras in your pocket and purse as well.
You have a vast variety of digital cameras in terms of shooting abilities and automatic versus manual function. If you are looking for an inexpensive and simple camera, go for compact or ultra compact that will reasonably stay in auto-focus. In case you are looking for a digital camera with a wide array of features such as retouch photos, lens changing and change shutter speeds, then a larger camera is appropriate for you.
Some people want a digital camera with all the bells and whistles in it. In fact, it is very important to decide what type of features you want in your digital camera. This will assist in filtering out the available choices. For instance, you may want a camera with a large LCD screen, so that you can have a clear view of pictures. In case you need a camera with video option, find a camera that will give you at least a 30-frame/second video. In some digital cameras, you have the option of built-in image stabilizer as well.
You have to determine how many megapixels you want your camera to have. A digital camera with a large number of megapixels will ensure better photo quality, particularly when you intend to take high-grade pictures. But you will have an average view of the pictures if you buy a camera with megapixels ranging from 3 to 5 megapixels. In case, you just want to take basic photos for web use or for some other purpose, buy a 2 or 2.9 megapixel camera. For extremely high-resolution photos, you can get away with 6 or more megapixels camera.