摄影中的概念

光圈设置、快门速度和 ISO 感光度如何控 制曝光

光圈设置、快门速度和 ISO 感光度与拍摄密切相关。光圈设置控制用 来调节光进入相机的开口,快门速度决定允许光进入的时间长度。ISO 感光度决定了胶片对光的反应速度。这三个方面共同称为曝光三要 素。

快门速度、光圈值或 ISO 感光度的变化可以通过调整互相抵消,以保 持光线量。但是,效果会根据设置变化。例如,快门速度在高速运动 中非常有用,光圈可控制景深,ISO 感光度可控制照片颗粒感。

设置

效果

 

 

设置

效果

 

 

 

快速

快门速度

= 较少光线

慢速

 

 

= 较多光线

= 静态

= 模糊

光圈值

大光圈

=较多光线

小光圈

=较小光线

 

高感光度

ISO 感光度

= 对光线更为敏感

低感光度

 

 

= 对光线不太敏感

= 更多颗粒 低 = 更少颗粒

= 浅景深 小 = 深景深

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Samsung EV-NXF1ZZB1ICZ, EV-NXF1ZZB2HDE, EV-NXF1ZZB2HCH manual = 静态 = 模糊 光圈值 大光圈 = 较多光线 小光圈 = 较小光线 高感光度, Iso 感光度, 低感光度

EV-NXF1ZZB2HCZ, EV-NXF1ZZB1IHU, EV-NXF1ZZB1JHU, EV-NXF1ZZB2JHU, EV-NXF1ZZB2KHU specifications

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