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美国作业代写:Video camera Tips

2017-11-30 来源: 51due教员组 类别: Essay范文

下面为大家整理一篇优秀的essay代写范文- Video camera Tips,供大家参考学习,这篇论文讨论了电视摄像技巧。电视摄像是指运用电视摄像机拍摄电视画面的一门实践性很强的科学。要想提高电视摄像的效果,首先便需要完善对摄像画面的保障工作,使节目的画面具有清晰、流畅、稳定的特点。例如,在一些较为狭小的空间内,为了保证照明而又不出现曝光过度的情况,就需要注意增加光照支持,但是在增加光照时,还需要避免摄像头接触到直射光线。

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Television camera refers to the use of television cameras to take pictures of a highly practical science. It requires us to grasp the relevant theoretical knowledge, but also put into practice, through practical activities, to cultivate the actual hands-on ability, that is, through the internship process, the consolidation and testing of knowledge and the theory used in practical operation. TV camera is not only a technical course, but also an art course, it synthesizes the knowledge of many subjects.

TV program recording contains a series of very complicated work, in which TV camera work is a very important part of the quality of TV programs often have a direct impact. At the same time, while the quality of television programs to optimize and check, the camera skills are often overlooked problems. The lack of camera skills has brought many quality problems to TV programs, which has become the key to the optimization of TV programs. Therefore, in order to better guarantee the quality of TV programs, the focus on the television camera skills.

The basic techniques of television shooting include: stability mainly refers to the camera in the filming process must remain stable, shooting the screen in addition to some special needs outside the camera intake of the screen does not allow any jitter or shaking. Qing mainly refers to the focus of the screen, require the screen in the filming process must ensure a good focus, to ensure that the screen clearly visible. The main point is through the filming of the camera personnel to enable the audience to accurately understand the content of the picture taken. In the filming should pay attention to the clarity of the picture and accuracy, as far as possible to reduce the late changes, so that the audience can accurately understand the whole picture of the main content to be expressed. Evenly this shooting factor is mainly aimed at the motion of the picture. In the shooting motion picture, the camera lens must guarantee the uniform movement, causes the shooting lens to maintain the continuity, lets the audience see the picture to maintain the uniform coordination. "Ping" refers to the level of the shot screen, required to shoot the screen must be horizontal vertical, there is a clear vertical. The shooting screen appears tilted, affecting the audience's visual effects and viewing feelings.

In order to improve the video camera skills, first of all, we need to improve the security of the camera screen, so that the program's screen has a clear, smooth and stable characteristics. For example, in some relatively small space, in order to ensure that the lighting without excessive exposure, it is necessary to pay attention to increase light support, but in addition to light, you also need to avoid camera exposure to direct light. This technique is often used in many indoor interview programs, as long as you pay more attention to the filming process.

The motion of the TV screen can express the movement and rhythm of the characters, in the process of television screen display, can be achieved by the use of video skills to achieve invisible movement, in the process of filming need to pay special attention to the following points: the selection of fixed lenses: in the process of filming, The selection of fixed lenses should be reasonable and orderly, the characteristics of the active objects remain in the lens, and the combination of various ways to achieve the purpose of combining static and dynamic; reasonable selection of the screen: the reasonable choice of the picture scene, can be done by combining the time and space, through the combination of time and space to achieve this goal Activity lens: The process of reducing the truth is a matter of principle, reasonable to let the lens movement, in the dynamic shooting of the picture will be displayed.

The quality of the TV screen depends on the white balance and the aperture control to a certain extent, the white balance is in the black and white image, makes the brightness signal become the standard white light, the white balance can affect the tone of the image, the same object in different light under the color shown is different, So the camera should be based on the color of the object and the temperature selection of different white balance standards, generally should be corrected under the backlight white balance, in the light shooting, so that the picture of the picture is presented in the image of the warm color camera personnel in the scene when the shooting should also control the aperture, Do not let it affect the color of the screen camera personnel should avoid automatic aperture to solve the brightness problem, because this is easily caused by brightness instability, the phenomenon of flickering.

So the camera personnel should be through the control of the optical circle to improve the quality of the picture, that is, first with the automatic way of fluctuation of the aperture and the aperture of the treatment, stability and then choose the manual way to shoot, this can improve the quality of the picture, in addition, the camera can be based on the As long as it is conducive to the screen tone of the way can be used

In a picture, the main thing is the main body, all surrounding scenery is to foil the main body and exist. Viewers should be able to see the main body at the first sight when they see the picture. In television cameras, the most commonly used method of highlighting the main body is through the lens of the push, pull, move, shake to show the main activities, so that the audience focus on the main body. And the continuity of TV works makes the subject much, in a very short scene, there are multiple bodies, can not directly through the lens changes from one body to another body, but between these bodies to find the contact line, and then the audience gradually from one body to the other body, so that the screen will be dynamic , and the screen switch will not appear abrupt.

The former focus lens is the focus group lens in the front of the lens, focusing can be moved back and forth, the front hood also rotates. This design makes the coincidence error caused by the transverse dispersion of the lens impossible to be corrected, and the dispersion is minimized only at the initial stage of the lens design. The focus group lens is divided into fixed and movable parts, the fixed part is in front, the movable part is in the back, the focus time focal length lens front end and the hood is not moving, only can move the partial movement, can make the suitable difference correction from the machine. Because the hood is fixed, it can be made into a rectangular shape of the screen, so as to fully through the effective light, shielding the useless light.

TV screen is the display of TV program content. The composition of TV camera can express the photographer's performance to the subject of the shooting intuitively and vividly, it can explain many problems only through the picture, so the TV composition should follow the people's aesthetic habit and psychological demand, and should keep the uniform, reasonable and rhythm of the picture. In addition, in the specific shooting activities, the photographer should scientifically release a variety of camera methods, such as motion photography and fixed camera combination, push the lens and pull the lens of the coordinated use, shaking the lens and the effective cooperation with the lens, thereby improving the overall quality of television programs.

Video camera is one of the most difficult to pursue the complexity of the work, require the camera workers must be adapted in a variety of complex environment to shoot, while ensuring the rational use of shooting skills, shooting high-quality TV material, for the late quality program production to provide more convenient place two therefore, TV camera workers should master all kinds of shooting skills, and constantly strengthen their own shooting skills, skillfully used in the process of television filming.

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