照片中的直方图

Have you ever taken a picture that you thought was great at the time, but not so great once you downloaded it later? The previews that you see on your LCD screen can sometimes be quite deceiving, especially when you are shooting photos outdoors in the sun.
::你有没有拍过一个你当时认为很棒的照片,但后来下载后就不那么好?在你的LCD屏幕上看到的预览有时会很欺骗人,特别是当你在阳光下拍摄室外的照片时。

(Explore your user manual or camera menu to find out how to view the histogram for your photograph. Photo editing software often will show you a histogram too.)
:使用您的用户手动或相机菜单来查看照片的直方图。 照片编辑软件通常也会显示直方图 。 )

How Histograms Can Help
::直方图如何帮助

One of the first things photographers want to know after taking a photo is whether or not they got the right exposure. Image editing software and many digital cameras create histograms that can be analyzed to determine if the exposure was right. These histograms count how many pixels are at each level between black and white. The height of the graph at each point depends on the number of pixels that are that bright.
::摄影师在拍摄照片后首先想知道的是他们是否得到了正确的曝光。图像编辑软件和许多数码相机创造了直方图,可以分析这些直方图以确定曝光是否正确。这些直方图计算了黑白之间每个级别上有多少像素。每个点的图形高度取决于亮度的像素数量。

Lighter images will produce histograms with bars mostly on the right side of the graph. Darker images will have bars mostly on the left side of the graph. A good image often will have bars spread all over. If you're able to take a peek at the histograms of your images while you’re shooting, this can help you figure out if you have room to tweak the exposure of your photos.
::更亮的图像将产生主要在图形右侧的柱形直方图。 更暗的图像将主要在图形左侧有条形图。 一个好的图像往往会到处布满条形图。 如果您在拍摄时能够查看图像的直方图, 这将有助于您发现是否还有空间可以调整照片的曝光量 。

See for yourself: 
::自己看一看:

A photo that has a good balanced exposure will have a histogram that looks like this. 
::一张平衡接触的照片 将有一个直方图 看起来像这个

A photo that does not have enough light will have a histogram that looks like this. 
::光线不足的照片 会有直方图 像这样

A photo that does not have enough light will have a histogram that looks like this. 
::光线不足的照片 会有直方图 像这样

You can adjust your exposure using the ISO setting, the Aperture settings, or the Shutter Speed settings on your camera. In automatic mode, your camera will adjust these for you. Sometimes you need to put your camera in manual mode and trick it into using a different setting to get the effect that you want for the light conditions you have. This is the trick to learning how to become a creative photographer.
::您可以使用 ISO 设置、 Aperture 设置或相机上的开关速度设置来调整曝光量。 在自动模式下, 您的相机将为您调整曝光量。 有时您需要将相机放在手动模式中, 并用不同的设置来获取您想要的光线条件效果。 这是学习如何成为创造性摄影师的技巧 。

Record Your FIndings
::记录您的F Indings

播放段落
• What is a histogram?
  ::什么是直方图?
播放段落
• How can it help you take better pictures?
  ::怎样才能帮你拍更好的照片?
播放段落
• Draw a picture of a balanced histogram showing a good exposure.
  ::绘制平衡直方图显示良好暴露的图片。
播放段落
• How can you adjust your camera to improve the histogram of the pictures you take?
  ::您如何调整相机来改进您拍摄的照片的直方图 ?