basler相机快门速度
In photography, shutter speed, also called exposure time, is the length of time the digital sensor (or film in an older camera) is exposed to light while taking a picture.
在摄影中，快门速度(也称为曝光时间)是在拍摄照片时数字传感器(或旧相机中的胶卷)曝光的时间长度。
In a DSLR, a physical shutter moves out of the way to let light fall on the camera’s sensor which records the actual image. Think of it like opening and closing the curtains in your living room. When the curtains are closed, no light gets through. As soon as you open the curtains, it comes rushing in.
在数码单反相机中，物理快门会移开，让光线照射到记录实际图像的相机传感器上。 可以将它想象成打开和关闭客厅的窗帘。 当窗帘关闭时，没有光通过。 一打开窗帘，它就会涌入。
Mirrorless and smartphone cameras, which are getting more and more popular, don’t have a physical shutter; instead, the sensor is always exposed to light. If you look at your smartphone, the sensor sits just behind the lens. There’s no room for a physical shutter! When you take a photo with one of these cameras, the sensor gets turned on. It saves the light that hits it during the time a physical shutter would be open on a DSLR, and then turns off again.
越来越受欢迎的无反光镜和智能手机相机没有物理快门。 相反，传感器始终暴露在光线下。 如果您看着智能手机，则传感器位于镜头后面。 没有物理快门的空间！ 当您使用这些相机之一拍摄照片时，传感器将打开。 当在DSLR上打开物理快门然后再次关闭时，它可以节省撞击它的光线。
快门速度如何运作 (How Shutter Speed Works)
When you take a photo, the longer the shutter is open (or the sensor is activated), the more light hits the sensor. The more light hits the sensor, the brighter the image will be. Imagine you’re filling a glass of water from a tap. If you leave the tap on for half a second, there’ll only be a small splash of water in the bottom. If you leave the tap on for five seconds, it will probably fill right up.
拍摄照片时，快门打开的时间越长(或传感器被**)，入射到传感器的光就越多。 入射到传感器的光越多，图像将越亮。 想象一下，您正在用自来水灌满一杯水。 如果您将水龙头放半秒钟，则底部只会溅出少量水。 如果您将水龙头保持打开状态五秒钟，它可能会立即填满。
Shutter speeds can range from the very quick—around 1/8000th of a second for some sports photography—to the very slow—upwards of 30 seconds for long exposure photos. Most shutter speeds that you’ll use, however, fall somewhere in the middle.
快门速度的范围可以从非常快的速度(某些体育摄影约为1/8000秒)到非常慢的速度(对于长时间曝光的照片而言约为30秒)。 但是，您将使用的大多数快门速度都处于中间位置。
If you take a photo with your smartphone in automatic mode (where you let it do all the work), it will try and use a shutter speed of between about 1/30th of a second and 1/500th of a second most of the time. What value it chooses depends on how much light there is.
如果您使用智能手机在自动模式下拍照(让其完成所有工作)，则它将尝试并使用大多数情况下大约1/30秒至1/500秒的快门速度。 它选择什么值取决于有多少光。
Going back to the glass example: on a bright day, it’s like you have a tap that with a really fast flow; water pumps out at an incredible rate. At night, you have a tap that only dribbles out a few drops; to fill the same glass, you need to hold it under the tap for a lot longer.
回到玻璃的例子：在晴朗的日子里，就像您的水龙头流量非常快； 水以惊人的速度泵出。 到了晚上，您的水龙头只会滴出几滴水。 要填充同一杯，您需要将其在水龙头下保持更长的时间。
In photography, you want to make sure the glass gets filled up, but doesn’t overflow. If you don’t let enough light hit the sensor, everything will just look murky and black. If you let too much hit the sensor, you’ve got the opposite problem: everything just looks white.
在摄影中，您要确保玻璃已装满，但不会溢出。 如果您没有让足够多的光照射到传感器上，那么一切都会显得模糊不清和黑色。 如果让太多的力撞击传感器，则会遇到相反的问题：一切看起来都白了。
您应该使用什么快门速度？ (What Shutter Speed Should You Use?)
Shutter speed is really important in photography. It’s one of the three settings that determine how your photos will look—but all those settings interact with each other, so in order to know what shutter speed you should use, you should also learn about those other settings. Check out our guide to your camera’s most important settings for everything you need to know.
快门速度在摄影中非常重要。 它是确定照片外观的三个设置之一，但是所有这些设置都是相互影响的，因此，要知道应该使用哪种快门速度，还应该了解其他设置。 查阅我们的相机最重要设置指南，了解所有需要了解的内容。
翻译自: https://www.howtogeek.com/300641/what-is-shutter-speed/
basler相机快门速度