What is the principle of digital camera? What's the difference between a digital camera and an ordinary camera?

Digital camera also has a name, that is, digital camera. There is a system in a digital camera that is no different from ordinary cameras, but the image recording method of digital cameras is completely different from ordinary cameras. Digital cameras use a set of photoelectric coupling devices.

Imaging principle of digital camera CCD, a photoelectric coupling device used in digital camera, transmits analog signals, so an ADC device is needed for digital processing. Then the data information of CCD is read by MPU, compressed and converted into a specific image format, and then the image is stored in the memory in the form of a file. Because of the different structure and function of CCD, the speed of digital camera shooting images is also different, which can be divided into still life shooting and dynamic shooting.

The contrast between digital cameras and ordinary traditional cameras is 1. The processing time of digital cameras is different from that of traditional cameras. There is a delay of about 1.5 seconds between pressing the shutter and the digital camera storing the photos. This is because digital cameras need to read images through optical sensors, change the shutter speed at high speed, check automatic gathering, turn on the flash, etc., so digital cameras will not shoot images continuously like traditional cameras. It can be said that the higher the resolution, the more time it takes.

2. The storage medium of digital camera is different from that of traditional camera. The storage medium of a digital camera is a memory card, and the images taken by the digital camera are stored in the memory card through digital components. The storage medium of the traditional camera is the negative film, and the photos taken by the ordinary camera are stored on the negative film by chemical method.

3. There are differences in photo quality between digital cameras and traditional cameras. The acquisition principle of digital camera is only bright or dark, and the CCD of digital camera will lose some details in bright or dark light, which is sometimes difficult to correct. Digital cameras are suitable for monotonous light, and taking pictures with flash or HMI light source will have good satisfactory results. The resolution of 35mm traditional camera can easily reach 2500dpi, while digital camera can't reach such a high resolution.

4. The images taken by digital camera can be directly input into the computer and printed after being processed by image processing software. Of course, digital cameras not only have this method, but also have a digital development. But the images of traditional cameras must be developed in a darkroom.

5. Digital camera has obvious advantages in film function. Digital cameras are easy to edit and process on computers, with large storage capacity, easy transmission and long-term storage. As long as there are suitable output devices, the output of digital cameras is also very convenient, and these advantages are incomparable to ordinary cameras. Traditional cameras need to be developed into film, so they must be developed in a development shop. Digital cameras don't have to be so troublesome, because they can be developed by inkjet printers, photo printers and digital print shops. More convenient. There are still some shortcomings in the cost of digital cameras, and the body of digital cameras is more expensive. Because of the electronic structure and machine density of digital cameras, the price of digital cameras has never been reduced.

The image quality of digital cameras also needs to be improved. But this shortcoming can only be solved by improving resolution and technological progress.

If you use a digital camera, you should pay attention to some precautions. 1, digital cameras should be stored away from humidity and dust. Please take out the battery before protecting the digital camera. If you don't use the digital camera for a long time, you can take out the battery and holster first and then store it in a dry and clean box. This can prolong the service life of digital cameras.

Don't shake hard when using digital camera. You should wrap a hand rope around your wrist and hang the camera around your neck to prevent the digital camera from accidentally falling down. Camera owners should also pay a little attention to their clothes and try to wear less metal products or glass products. So as not to scratch the camera body and lens. The damage will be too serious to be repaired.

3. You can also prepare a camera bag at ordinary times. When not in use, it is more convenient to put the digital camera in the camera bag for temporary storage. Keep away from sofas, counters, sofas, chairs and other places after putting them in the camera bag. In order to avoid accidentally hitting the camera and accidentally sitting on the lens of the camera.

No matter what kind of camera has its advantages and disadvantages, we can't ignore the advantages of the camera itself because of its disadvantages. Just choose according to your own preferences and favorite things. Camera owners also need to keep their own cameras.