Section outline

  • In Digital Photography ISO measures the light sensitivity of the image sensor.  An ISO of 64 or 100 is low. The sensor is less sensitive to light light and the image will be fine with lots of clear details. Higher ISO settings are generally used in darker situations. This makes the sensor more sensitive to light and is good for shooting in dark places.  For example an indoor sports event when you want to freeze the action in lower light. However the higher the ISO you choose the noisier shots you will get. I’ll illustrate this below with two enlargements of shots that I just took – the one on the  top is taken at 100 ISO and the one of the  bottom at 3200 ISO (click to enlarge to see the full effect).
    ::在数字摄影中, ISO 测量图像传感器的光灵度。 ISO 64 或 100 低。 传感器对光光不太敏感, 图像会有很多清晰的细节。 更高程度的ISO 设置通常在暗处使用。 这使得传感器对光更敏感, 并有利于在暗处拍摄。 例如, 当您想要冻结低光下动作时, 室内运动活动会越多。 然而, ISO 越高, 您会选择的音频镜头。 我将在下面用我刚刚拍摄的两次镜头放大来说明这一点 — 顶部的镜头是100 ISO,底部是3200 ISO( 点击放大以观察全面效果 ) 。

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    ISO 100
    ::ISO 100

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    ISO 3200
    ::ISO 3200

    100 ISO is generally accepted as ‘normal’ and will give you nice crisp photograph (little noise/grain).
    ::100国际标准化组织通常被公认为“正常”,

    Most people tend to keep their digital cameras in ‘Auto Mode’ where the camera selects the appropriate ISO setting depending upon the conditions you’re shooting in (it will try to keep it as low as possible) but some cameras also give you the opportunity to select your own ISO also.
    ::多数人倾向于将数码相机保留在“自动模式”中, 摄影机根据拍摄中的条件选择适当的ISO设置(尽量保持低调), 但有些摄像头也为您提供了选择自己的ISO的机会。

    Questions to Ask When Choosing ISO
    ::选择 ISO 时要询问的问题

    When choosing the ISO setting I generally ask myself the following four questions:
    ::在选择 ISO 设置时,我一般会问自己以下四个问题:

    1. Light – Is the subject well lit? (use a low ISO for higher quality)
      ::灯光 - 主题是否光线良好? (使用低的ISO来提高质量)
    2. Grain – Do I want a grainy shot or one without noise? 
      ::谷仓—我要打一针还是一针没有噪音的?
    3. Tripod – Am I using a tripod? (Use a low ISO for higher quality)
      ::三重目标 — — 我是否使用三重目标? (使用低ISO来提高质量)
    4. Moving Subject (Use a high ISO) – Is my subject moving or stationary? ((Use a low ISO for higher quality)
      ::移动对象( 使用高 ISO ) - 我的主体移动还是静止? (( 使用低 ISO 用于提高质量)

    If there is plenty of light choose a low ISO rating. If it’s dark, you, don’t have a tripod and/or your subject is moving, consider increasing the ISO as it will enable me to shoot with a faster shutter speed and still expose the shot well. Of course the trade off of this increase in ISO will be noisier shots.
    ::如果有很多光线选择低的ISO评级。 如果是黑暗的,你,没有三脚架和(或)你的对象正在移动,请考虑提高ISO,因为这样可以让我更快的开关速度射击,并且仍然能很好地暴露出镜头。 当然,降低ISO的这一增幅将是更清晰的镜头。

    Situations where you might need to push ISO to higher settings include:
    ::您可能需要将 ISO 推进到更高设置的情况包括 :

    • Indoor Sports Events – where your subject is moving fast yet you may have limited light available.
      ::室内体育赛事 — — 你的对象动作很快,但光线有限。
    • Concerts – also low in light and often ‘no-flash’ zones
      ::音乐会 — — 光线也低,而且经常是 " 不轰轰轰烈烈 " 区
    • Art Galleries, Churches etc- many galleries have rules against using a flash and of course being indoors are not well lit.
      ::美术馆、教堂等许多画廊都有禁止使用闪光的规则,当然室内也没有很好地点亮。
    • Birthday Parties – blowing out the candles in a dark room can give you a nice moody shot which would be ruined by a bright flash. Increasing the ISO can help capture the scene.
      ::生日派对 — — 在暗房里吹蜡烛可以给你一个好听的情绪性镜头,它会被明亮的闪光摧毁。 增加ISO可以帮助捕捉现场。

    ISO is an important aspect of digital photography to have an understanding of if you want to gain more control of your digital camera. Experiment with different settings and how they impact your images today – particularly learn more about and which with ISO are a part of the .
    ::ISO是数字摄影的一个重要方面,可以理解如果你想对你的数码相机获得更多控制权的话。 用不同的设置进行实验,以及它们如何影响今天的图像 — — 特别是更多地了解并且哪些是ISO的一部分 — — 。

    Record Your Findings
    ::记录你的调查结果

    • Which ISO numbers, high or low will give you the best quality?
      ::哪些国际标准化组织数字,高或低,会给你最好的质量?
    • Which ISO numbers, high or low will allow you to gather the most light and take shots in the dark?
      ::哪些国际标准化组织数字,无论高低,都允许你收集最亮的光,在黑暗中拍照?
    • What are the advantages and disadvantages of shooting at a high ISO number?
      ::射杀国际标准化组织高号码的利弊何在?
    • What tools can you use to us a smaller ISO with less light?
      ::您可以使用什么工具来帮助我们使用小的 光线小一点的ISO ?
    • What ISO setting do you want to use for sports shots?
      ::您想要在体育比赛中使用什么 ISO 设置 ?
    • What ISO will allow you to shoot indoors without a flash?
      ::什么ISO能让你在没有闪光的情况下在室内拍摄?