ISO 感光度

词汇表

闪光灯

利用该快速闪光有利于在低照度条件下进行充分曝光。

焦距

从镜头中心到其焦点的距离(以毫米为单位)。较长的焦距导 致视角较窄且拍摄对象放大。较短的焦距使视角变宽。

直方图

代表影像亮度的图形。横轴代表亮度,纵轴代表像素数。直 方图左上方的点(太暗)及右上方的点(太亮)表示照片曝 光不良。

图像传感器

数码相机中包含图像中每个像素各自的像点的物理部件。每 个像点记录着曝光时射到该点的光线的亮度。普通的传感器 类型有 CCD(电耦合元件)和 CMOS(互补金属氧化物半导 体)。

ISO 感光度

相机对光线的敏感度,与胶片相机中使用的胶片速度等

同。ISO 感光度的设置越高,相机可使用越快的快门速度,这 样可以减少由于相机抖动和光线不足引起的模糊。然而,影像 的感光度越高就越容易产生噪点。

JPEG(联合图像专家组)

数码影像的有损压缩方式。压缩成 JPEG 图像时,在尽可能避 免降低图像分辨率的同时降低图像的整体文件大小。

LCD(液晶显示屏)

电子消费品中广泛使用的一种的视觉显示屏。该显示屏需要独 立的逆光,如 CCFL LED 来再现色彩。

微距

利用该功能可以拍摄微小对象的近距离照片。使用微距功能 时,相机可以对微小对象以几近实物的比例(1:1)进行鲜明 的对焦。

测光

测光是指相机测量曝光光量的方法。

MJPEG(联合活动图像专家组)

一种压缩为 JPEG 图像的视频格式。

噪点

数码影像中的可能显示为位置错误或随机的明亮的错误像素。 当相机以高感光度拍摄照片、或以在黑暗场所自动设置的感光 度拍摄照片时,容易产生噪点。

光学变焦

这是一种可以用镜头放大影像而不降低影像画质的普通变焦。

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Samsung EC-PL20ZZBPPE2, EC-PL20ZZBPBE1, EC-PL20ZZBPSE1, EC-PL21ZZBPBE2, EC-PL20ZZBPBE3, EC-PL20ZZBPSE3, EC-PL20ZZBPPE3 Iso 感光度

EC-PL20ZZBPBE3, EC-PL20ZZBPSE1 specifications

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