摄影中的概念

ISO 感光度

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 设备的感光度。

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、即相片中的小斑点、点和其它现象,使外观杂乱不洁。根 据一般规则、最好是使用低 ISO 设置以防止相片中出现杂点、除非在 黑暗的环境中拍摄或拍摄夜景。

ISO 感光度而导致的画质和亮度不同

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 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 感光度不需要使用较慢的快门速度。但是、在暗光条件下或晚 上、低 ISO 感光度和较快的快门速度将导致相片模糊不清。

使用三脚架和高感光度拍摄的相片

使用低 ISO 感光度拍摄的模糊相片

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Samsung EV-NX100ZBABHU, EV-NX100ZBABDE, EV-NX100ZBABIT, EV-NX100ZBANIT, EV-NX100ZBAWIT, EV-NX100ZBABCZ, EV-NX100ZBABPL Iso 感光度

EV-NX100ZBABPL, EV-NX100ZBABHU, EV-NX100ZBAWIT, EV-NX100ZBABSE, EV-NX100ZBABCZ specifications

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