多层的光度学

　　Multilayer photometry

　　多区域光度学，也称为评价光度学，将图像分成几个区域。我要独立做，然后整理。为了获得完整的曝光，多区域测量通常优先于聚焦的主要目标，因为在大多数情况下，聚焦的主要目标是需要正确曝光的部分。使用多区域测光，即使对摄影一窍不通的人也能轻松获得精确曝光。因此，多区域测光是一种先进流行的测光方式，也是目前先进的自动相机默认的测光方式。

　　Multi region photometry, also known as evaluation photometry, divides an image into several regions. I'm going to do it on my own, and sort it out. In order to obtain complete exposure, multi area measurement usually takes precedence over the main target of focusing, because in most cases, the main target of focusing is the part requiring correct exposure. With multi area photometry, even people who are not familiar with photography can easily get accurate exposure. Therefore, multi area metering is an advanced and popular metering method, and it is also the default metering method of the advanced automatic camera at present.

　　中键平均光度法

　　Middle bond average photometry

　　中键平均测光是大多数相机常用的测光方式，也是一种广泛使用的测光方式。中央重点测光方式意味着阅读在中部地区的影响是最大的,影响图像的四个角,最年轻的,通常中央集中计量中心三分之二的部分图像敏感(具体范围按照不同品牌的相机和不同),一些镜头照片底部的重视,为了减少对景观的影响,在正常情况下,天空集中聚焦测光是一种非常实用的测光方式，但如果画面不是集中或拍摄，可能会造成测光误差。

　　Middle key average metering is a common metering method for most cameras, and it is also a widely used metering method. The central focus metering means that reading has the greatest impact in the central region, affecting the four corners of the image, the youngest, usually two-thirds of the images in the central focus metering center are sensitive (the specific range depends on different brands of cameras and different), and the attention paid to the bottom of some lens photos. In order to reduce the impact on the landscape, under normal circumstances, the sky focus metering is a non It is often used as a light metering method, but if the picture is not centralized or photographed, it may cause light metering error.

     点测光

　　Spot

　　点式计量，又称键式计量，是指占框架面积1% ~ 5%的计量方式。测点方式很少使用，很难掌握。但在某些情况下，测点可以发挥重要作用。知道什么时候使用网点计量，正确使用网点计量，一方面可以使被摄体曝光准确，另一方面可以利用“光敏公差”创造出现实中看不到的精彩画面。

　　Point measurement, also known as key measurement, refers to the measurement method accounting for 1% - 5% of the frame area. The method of measuring points is seldom used and difficult to master. But in some cases, measuring points can play an important role. Know when to use dot metering and use dot metering correctly, on the one hand, it can make the subject exposure accurate, on the other hand, it can use "photosensitive tolerance" to create wonderful pictures that can not be seen in reality.

　　适用点测模式的情况:光线分布不均匀，对比度大的情况，如逆光下，如果不使用点测，可能会导致需要显示的对象曝光不准确。当光线太亮时，主体就会变成轮廓，照片就会是没有层次的白色，或者光线太暗看不清细节。

　　Applicable to spot measurement mode: when the light distribution is uneven and the contrast is large, for example, under backlight, if spot measurement is not used, the exposure of the object to be displayed may be inaccurate. When the light is too bright, the main body will become outline, and the photo will be white without hierarchy, or the light is too dark to see the details.