Second, the card machine, the card machine is the biggest feature, but it is not recommended to buy a card machine, because the card machine is thin, its optical zoom factor can not be very high, at most 2 to 3 times, while the non-card machine can reach 3 to 4 times. Professional can reach 10 times or more. Optical zoom is the real zoom. Digital zoom is just a number in name only.
In order to ensure the compact body of the card machine, the lens size is generally relatively small. Anyone who knows a little about optics knows that the larger the lens size, the more light enters and the better the imaging quality. This is why professional cameras have larger lenses.
Third, don't blindly pursue the size of CCD. It's not everything. For example, the CCD of card machine is 6.5438+million pixels, and the CCD of non-card machine is 8 million pixels. In fact, the photos taken without the card machine are still good. 8 million households is enough.
Fourth, when shopping, when representing the pixels of a digital camera, some will indicate the effective pixels, and some will indicate the interpolated pixels. Effective pixels are the real pixels of the camera, and interpolation pixels are simply pixels obtained by enlarging photos through software processing. Sometimes, check out this website www.zol.com.cn Camera Channel.