High pixel = high-resolution image?
January 8, 2010 Leave a comment
Digital cameras are becoming cheaper and there are various models available on the market these days. Pixel normally tops the criteria when we look for a new camera, believing the high-pixel camera will take high-resolution images. Stop it if you have this in mind. It is misbelieved!
What’s the pixel then? The number of pixel defines the maximum enlargeable size of photos. For example, 1.3 mega pixel cameras will give us 1280 x 1024 px at maximum, whereas the photos taken by ten mega pixel can be maximally puffed up to 3648 x 2736 px.
Up to this point, I bet many are wondering where high-resolution image is from. Ok, it is due to an image sensor. It is typically called a charge-coupled device (CCD) or a complementary metal–oxide–semiconductor (CMOS) active-pixel sensor. The compact or mobile phone camera usually comes with poor image sensor in comparison with DSLR camera which always produces high-quality photos. (But please except the Japanese call phone. I think it is equipped with rather fine CCD which I saw this with my eyes. Its single pixel phone, Sharp, can take a clear picture that even Nokias with one to five mega pixel are shy.
Hence, test the camera yourself before purchasing to see if it takes good-enough images. You need not to buy the high-pixel camera unless you want to snap yourself and enlarge it to put on the billboard near an expressway.