What are the five components of a digital camera and what are the functions of each component?

Generally speaking, a digital camera is mainly composed of five parts, namely, a framing system, a control system, an imaging system, a storage system and a power supply. Let's have a brief look at digital cameras.

First, the frame system

The framing system is composed of related components of digital cameras to obtain images, and its function is to let photographers see the audio and video shot through them. There are similarities and differences between digital cameras and traditional cameras. The same is through the lens and viewfinder, the difference is that digital cameras can use LCD screen to view.

Second, the control system

The control system is composed of controllable components of digital camera, and its function is to make the image focus clearer, the exposure more accurate, the color more realistic and completely preserved through manipulation.

Third, the playback system.

The playback system is used to play the recorded images, and can perform operations such as fast rewind, fast forward and playback.

Fourth, the storage system

The storage system can be divided into two parts. One part is a video tape for video recording, which is a high-density information storage and conversion medium. At present, 8 mm video tape is widely used in digital cameras, which has a direct impact on the quality of recorded and played back signals during magnetic recording and playback. Video tape has always been the mainstream product in recording media, but at present some cameras use new recording media, such as DVD-RAM and hard disk. The second is a memory card for recording digital photos, and a digital camera is used to shoot still images. Like the memory card of a digital camera, it can be used to take photos, and when necessary, it can exchange image data with computers and other devices through USB cables connected to the camera.

Installation of video tape. The video tape is loaded from the bottom of the camera, and its operation steps are as follows: first, turn on the power supply; Then lay the camera flat, and then push the open/eject switch in the direction of the arrow to open the cover. At this time, the video cabin automatically rises and opens, as shown in Figure 7. Push the middle part of the back of the video tape to be loaded, and pay attention to insert the video tape window outward into the bottom of the video tape box; Finally, the PUSH sign on the video cabin closes the video cabin. When the video cabin is completely lowered, close the cover to make it click.

It is best to process the video before using it. Formatting DV video tape is necessary for batch acquisition and accurate time code search. Formatting here means recording a "blank" video from beginning to end without interruption. Professional photographers will do this for the new DV video. After formatting, you can start shooting video. In this way, when you play a video script on a DV camera, the counter (which will be displayed as a time code on the LCD screen or viewing window of the camera) will continue to increase, even if there is no video.

Verb (abbreviation of verb) power supply system

The DC power supply used by the camera is a sealed battery, which avoids the problems of liquid leakage and air leakage and is very safe to use. At the same time, because it can be charged for more than 300 times, it has long service life and is flexible and convenient to use. It can avoid the limitation of the power connection line when using AC power supply, and make shooting more free, especially when taking pictures outdoors, rechargeable batteries are an essential power supply. In addition, the general camera also provides a socket directly connected to the AC power supply. When using the camera indoors, you can use AC power supply.

The battery is the power supply of the camera, and this step is essential. If shooting indoors, you can connect the AC power supply with the power cord and AC power converter. At this point, you can connect the AC power adapter first, then open the DC IN jack cover and insert one end of the cable. If shooting outdoors, you need to use rechargeable batteries as power supply. At this time, you just need to lift the viewfinder, push the battery along the battery slot until it clicks, and then put down the viewfinder. As shown in fig. 8. If you want to take out the battery, just lift the viewfinder, then press the battery release button, and then take out the battery.

Prepare more batteries before shooting to ensure that the batteries are used up when shooting, so as to prevent every precious moment from being missed. Even if one battery is enough for video recording, just in case, prepare another battery. When charging, use the connecting cable to insert the charging interface.

For beginners, DV is still a relatively new thing, so try to read the user manual before using it. Of course, you can also find some books about DV. For example, the book "Digital Camera from Entry to Mastery" is good. This is a book about DV shooting, DV usage, shooting scheme and post-editing. Its most attractive are 26 creative shooting schemes such as Chinese New Year, wedding, birthday, children's documentary, graduation ceremony, school sports meeting and personal video resume. , can let the majority of DV users refer to shoot a perfect small movie. You might as well find one.