Before deciding to buy digital camera, you must ask yourself that what kind of work do you want the digital camera does for you. Besides the digital camera is divided to many series, it’s still divided by picture resolution. If you choose digital camera with high resolution but you use it only low resolution for sending e-mail or create website, it's costly if you buy one with too good quality. If you need high quality picture and advanced function for experienced user, you should use prosumer or D-SLR, it’s the most suitable.
2. Suitable of Price
To limit budget is necessary, it can help you to limit yourself when you buy. Now on the market, various price different along to brand, capability and functions. User can compare the fact of specification of each brand with the same price before making decision. For example, you have limited budget at $200, you should find the suitable digital camera at this price; no need to consider another high price or low price.
3. Size & Resolution of Picture
Pixel can tell you how size is your picture; more pixel, it’s bigger, and it can be printed on paper with very high quality because it’s big. The number of pixel is assigned size and resolution of picture. Trend a number of pixel that suitable with other work will be increased. See below, the suitable resolution for many kind of works.
Size of picture 300,000 - 1,000,000 pixel: Suitable for attatching with E-mail or website
Size of picture 2 - 3 MP pixel: Suitable for photography size 4 x 6 inch
Size of picture 4 - 8 MP pixel: Suitable for photography size more 8 x 12 inch
Size of picture 2 - 3 MP pixel: Suitable for photography size 4 x 6 inch
Size of picture 10 - 16 MP pixel: Suitable for advertising printed matter.
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