How to use night shooting function in DV shooting

At present, some new digital cameras are equipped with infrared and other night shooting functions. With this camera, you can shoot clear objects at night without any lighting, as shown in the following figure. For example, when the United States attacked Iraq, most parts of the Iraqi capital were in a state of power failure. At this time, in addition to the fire caused by anti-aircraft tracer and missile explosion, only moonlight or starlight shines, and the visibility at night is extremely poor. If the camera does not have the function of shooting at night, it is impossible to shoot any images. (1) infrared night shooting function Sony pioneered the infrared night shooting function of the camera. In camera or memory mode, just push the night beat switch to the ON position. Later, a digital camera with infrared night shooting function was introduced. Automatic adjustment of slow shutter can get better image effect, and can shoot an image 16 times brighter than infrared night shooting function. General infrared night shooting function and ultra-infrared night shooting function can shoot objects under OLx. However, because it can shoot satisfactory results in the absence of light at all, the infrared night shooting function is started at night with poor visibility, and the shot image will be green or black and white with high noise. See the figure below. (2) You can't use infrared night shooting mode during the day. Some users think that the infrared night shooting function is the perspective function, but it is not. If the infrared night shooting function of the digital camera is turned on during the day, it will not only have the so-called "perspective" effect, but also damage the CCD photosensitive element (the lower the shutter speed, the greater the damage to the CCD photosensitive element), which will affect the normal photography and even damage the machine. (3) Can't shoot infinite scenery Although infrared night shooting is used at night, digital cameras can shoot objects that people can't see, but their sight distance is limited, not infinite. When the infrared rays emitted by the digital camera can't reach the farther scenery, it can't "see" the distant objects. (4) Color night vision function "color night vision" of Panasonic digital camera? Function, you can use the illumination of lLx (shutter speed is controlled at 1/2s) to brighten the subject. Color night vision camera uses the method of extending the exposure time of CCD to gradually accumulate the charge generated by light on CCD, and at the same time uses the circuit of digital camera to perform high gain operation to complete "night vision". Its characteristic is that the shooting environment must have at least 1Lx light (about the brightness of a candle), because it is not infrared shooting, so the shot picture is color. However, due to the prolonged exposure time of CCD, the pictures taken are not so continuous, and the phenomenon of picture tailing will also occur. (5) Color digital night vision function The color digital night vision function adopted by JVC is similar to that of Panasonic. Because the slow shutter is used, it is best to use a tripod when shooting, and it is difficult to take a good picture by hand. It is more suitable for taking still color pictures. When shooting moving objects, like Panasonic's color night vision function, the image will be blurred and the picture will be intermittent.