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    相机偏振镜的类型和工作方式
    2016/5/10 10:42:24
    今天我们山东艺考摄影培训机构小编给大家介绍的是相机偏振镜的类型和工作方式:
    Today we Shandong art photography training institutions Xiaobian to introduce the camera polarizer type and working mode:
    相机上的偏振镜可能是最重要的滤光镜之一。偏振镜的作用是消除偏振光,减少反光和眩光,同时增加色彩饱和度——特别是对蓝天。圆形偏振镜的使用方法是旋转外层镜片,具体角度根据实际情况而定。偏振镜的效果很难通过电脑上的后期处理来实现。
    The camera lens is one of the most important filters. The role of the polarizing mirror is to eliminate polarized light, reduce the reflection and glare, while increasing color saturation, especially for the blue sky. The circular polarized mirror is used for rotating the outer lens, and the specific angle is determined according to the actual situation. The effect of polarization mirror is difficult to achieve through the late processing of the computer.
    太阳发出的自然光会以光波的形式沿直线传播,光波会向任何方向振动。当光线经物体反射后,会有一定波长的光线被反射出来,呈现出特定颜色,而其余波长就会被物体吸收。
    The natural light emitted by the sun will travel in a straight line in the form of light waves, and the waves will be in any direction. When the light is reflected by the object, there will be a certain wavelength of light is reflected, showing a specific color, and the rest of the wavelength will be absorbed by the object.
    例如,纯蓝色的物体只会反射蓝色光,同时吸收红、橙、黄、绿、青和紫色光。同样,绿叶会反射绿色和一部分黄色光,吸收其余光线。
    For example, the pure blue object will reflect blue light, and the absorption of red orange and yellow, green, blue and purple. Again, the green leaves reflect the green and yellow light, absorbing the rest of the light.
    如果经过反射后的光波只向一个方向振动,那么就叫作偏振光。偏振光会引起眩光并降低反射表面色彩饱和度。所以使用特殊的偏振镜过滤掉偏振光,就可以增加色彩饱和度。
    If the reflected light is only in one direction, then it is called polarized light. Polarized light can cause glare and reduce the color saturation of the reflecting surface. So it can be used to filter out the polarized light with a special polarizing filter, which can increase the color saturation.
    偏振镜是在2片玻璃中夹有一层偏振片的特殊滤镜。在圆形偏振镜中,旋转外层镜片会改变偏振角度,从而过滤掉一部分光线。
    A polarizer is a polarizing plate special filter layer between 2 pieces of glass. In a circular polarized lens, the rotating outer lens can change the polarizing angle to filter out part of the light.
    当阳光经过地球的大气层时,会和氮气或氧气分子发生碰撞而产生散射。蓝色的光会比红光散射得更多,这就是为什么晴朗的天空是蓝色的原因。
    When sunlight passes through the earth's atmosphere, it will collide with the nitrogen or oxygen molecule. The blue light will scatter more than the red light, which is why the clear sky is blue.
    散射光会倾向于保持一个方向的振动。若摄影师的拍摄方向与光线照射方向保持垂直,光线的偏振性最强,偏振镜的作用最明显。当太阳位于摄影师面前或身后时,偏振镜就不会起作用。
    Scattered light tends to keep a direction of vibration. If the direction of the photographer's shooting is perpendicular to the direction of the light, the polarization of the light is the strongest, and the effect of the polarizing mirror is the most obvious. When the sun is in front of the photographer or behind, the polarizing mirror will not work.
    目前有2种偏振镜可选——线性偏振镜和圆形偏振镜,不过只有圆偏适合数码相机。因为线性偏振光可能会影响相机的测光和自动对焦系统。
    At present, there are 2 kinds of polarization mirror optional - linear polarization and circular polarization mirror, but only round partial suitable for digital camera. Because the linear polarized light may affect the camera's metering and auto focus system.