The price of digital cameras is getting lower and lower. If you still hold a traditional point-and-shoot film camera these days, it will absolutely be a rare sight. The rapid popularization of digital cameras has made shooting simpler and more casual, which can be regarded as both a good thing and something with disadvantages. The reason why we say so is that, on the one hand, compared with traditional film cameras, although the budget for buying a digital camera is much higher, it's too convenient to take pictures instantly and look at them immediately. If they don't turn out well, just delete them and retake them. This not only saves the money for buying films, but also greatly reduces the cost of developing films. Moreover, many family users have got used to storing photos on computers and only select a few of them for printing each time. On the other hand, due to almost no cost in taking pictures with digital cameras, the process of taking pictures becomes casual. People are very indifferent to the learning of basic photographic knowledge and overly rely on the full automatic mode. In an afternoon, they can take hundreds of pictures casually, but when they come back to select the photos, there is not a single satisfactory one.