What's the difference between a digital camera and a traditional camera? What are their advantages and disadvantages?

Imaging principle: traditional cameras use silver salt photosensitive materials (that is, film) as carriers. After shooting, the film has to be developed to get the photos. During shooting, it is impossible to know whether the shooting effect is good or not, and the photos cannot be deleted. Digital cameras use CCD/CMOS components instead of film, and then convert optical signals into electrical signals, which are recorded on the memory card after A/D conversion, and the memory card can be reused. In addition, because the digital camera has an LCD screen, we can "shoot immediately" when taking photos, and we can delete and modify photos at any time.

Storage medium: Digital camera images are digitally stored on magnetic media, while traditional camera images are chemically recorded on silver halide film. At present, the storage media of digital cameras include MMC, SD, XD, SM card, CF card, Sony memory stick and IBM mini hard disk.

Input-output mode: the image of digital camera can be directly input into the computer, printed and output after processing or directly made into a web page, which is convenient and fast. The image of traditional camera must be developed in darkroom and processed by scanner, and the quality of scanned image will inevitably be affected by the accuracy of scanner. If connected to a video output terminal, it can be displayed on TV.

Introduction to traditional cameras:

Traditional cameras are divided into monocular cameras and binocular cameras. Monocular cameras are used by professionals who know photography, while binocular cameras are mostly just fool cameras. For the average consumer, a binocular camera can take photos as long as it can load negatives, discharge batteries and press the shutter. As for the quality of photos, it depends on the quality of the camera. Therefore, the traditional fool camera is relatively simple to use, and it is easy for both the elderly and children to get started! As for professional monocular cameras, you need to know some photography skills, which can't be explained clearly in two or three pages.

Traditional cameras only use negatives, so in terms of cost, consumers need to buy negatives, develop them into photos, and also need to develop negatives and photographic paper. Calculate the cost of each roll of film, about 60 yuan, if it is a positive film, about 40 yuan.

Brief introduction of digital camera:

Digital cameras are also divided into monocular cameras and binocular cameras, which are similar to traditional cameras in control, but the post-processing is more troublesome, usually through computers. For the younger generation, there are very few people who don't know computers, but think about it. What will happen if this digital camera is in the hands of an old grandfather and grandmother? Fortunately, with the development of digital printing in recent years, you can output photos without knowing digital image processing.

Digital cameras use photosensitive elements to expose images and then record them on storage media, which can be reused. Therefore, users of digital cameras only need to buy enough digital cameras and storage media at one time to take pictures. If they need to develop photos, the current market 4×6 is about one to three yuan. Compared with the traditional negative output, the cost of each photo is actually similar.

Advantages of digital camera over traditional camera;

Compared with traditional cameras, digital cameras have many advantages. Although in the past, a digital camera that was said to have a good effect always cost 2000 yuan, plus an inexpensive memory card, it was really painful to buy, while an ordinary fool camera only cost more than 1000 yuan. In a sense, traditional cameras are much cheaper. In fact, long-term cost calculation shows that the traditional camera is not cost-effective.

Buying a digital camera can enjoy the thrill of snapping the shutter. It doesn't matter if it's bad. Anyway, it doesn't hurt. You can check it right away. If it's not good, you can wash off the remake, but what about the traditional camera? Every time you press the shutter, it costs money. Whether the photo is taken well or not will be known until the photo is developed. If this photo was taken abroad, do I have to fly abroad to take it again? In addition, digital cameras can choose their favorite photos to output, while traditional cameras have to develop the negative before they can tell which one to develop.

Besides, if you want to share photos with friends, if a group of people go out, how many photos do you have to develop and send them one by one by email and other different ways? How much will it cost? But the numbers are different. There are emails that can be sent, and they can be received by the other party in a short time. Otherwise, they can be developed into photos and sent out.