The first step: Determine the purpose and purpose of buying a camera to determine the purpose and purpose of buying a camera is very important, only by understanding their needs, we can be targeted to choose and buy the machine they really need. Otherwise, it is possible to spend a lot of money to buy a camera, only to find that the functions can not meet their requirements, or too many functions are simply not used. We can think about what we buy a digital camera for. For example, some friends buy digital cameras in order to travel; Some friends want to learn photography; Some friends want to take macro photos; Of course, there are also people who want to take close-up photos or take pictures of their newborn children. In short, be sure to spend clearly.