Before the opening first explain, this article only for the purchase of ordinary consumer, DC, the DC and do not include quasi-professional digital SLR.
The key to a good camera: sensor size is large enough
Selection of digital cameras for many users is a headache, especially the ordinary consumer DC. Face the most complex category DC and overwhelming consumer advertising, so that buyers can easily get lost. However, I understand the process of market and products and found that the selection of digital cameras is actually very simple, the key is are you willing to spare their homework before buying.

First, we need to know whether the best measure of a digital camera, simply because the camera is large enough degree of tolerance, ability to control noise is good enough. Greater tolerance, greater control of the high contrast, the corresponding details of your performance; ability to control noise well enough, will largely enhance the use of the camera, which is not limited to low light environment, necessary when a higher shutter speed to capture benefit equally clear.
But how can we have a greater tolerance and better ability to control noise, the key is the image sensor size is large enough. In general, the greater the image sensor size digital cameras, noise tolerance and control capabilities will be more outstanding.