摄影中的概念

ISO 感光度

由于低 ISO 感光度意味着相机将对光不很敏感，因此您需要更多的光 以获得最佳曝光。使用低 ISO 感光度时，打开更大的光圈或降低快门

影像的曝光由相机的感光度决定。此感光度基于国际胶卷标准，即

速度以允许更多光进入相机。例如，在光线充足、阳光明媚的白天，

ISO 标准。在数码相机上，此感光度额定值用于表示拍摄影像的数字

低 ISO 感光度不需要使用慢速快门。但是，在暗处或晚上，低 ISO 感

机构的感光度。

光度会导致照片模糊不清。因此，建议适度增加 ISO 感光度。

数字加倍，ISO 感光度也加倍。例如，ISO 200 设置所拍摄影像的速

 

 

 

 

 

 

 

 

度是 ISO 100 设置速度的两倍。但是，较高的 ISO 设置会导致产生

 

 

 

 

“杂点”，即照片中的小斑点、点和其他现象，使外观杂乱不洁。根

 

 

 

 

据一般规则，最好是使用低 ISO 设置以防止照片中出现杂点，除非在

 

 

 

 

黑暗的环境中拍摄或拍摄夜景。

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

使用三脚架和高 ISO 感光度拍摄的照片

 

使用低 ISO 感光度拍摄的模糊照片

 

 

 

 

 

 

 

 

因 ISO 感光度而导致的画质和亮度不同

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Samsung EV-NXF1ZZB2KCH 影像的曝光由相机的感光度决定。此感光度基于国际胶卷标准，即, Iso 标准。在数码相机上，此感光度额定值用于表示拍摄影像的数字, 速度以允许更多光进入相机。例如，在光线充足、阳光明媚的白天，
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