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每个相机镜头上都明确标明了它的焦距,那么它传递给我们的是什么信息呢?不同的相机使用不同的焦距又会有怎样的图片效果呢? 焦距与视角许多相机和镜头购买者都认为,焦距的长短决定了被拍摄物体在成像介质(胶片或者传感器)上成像的大小,可除了焦距,成像介质的显示面积也会反过来影响实际拍摄的视角。比如,把一个50mm 标准镜头(35mm 规格)应用在数码单反相机上时,由于相机自身传感器的尺寸要比镜头的像场小(见示意图),因此所捕捉到画面内容也就只是镜头真正取景的中间一部分,视觉上的感觉就是画面视角变小,相当于一支焦距更长镜头的取景范围。这
Each camera lens is clearly marked on its focal length, then it is passed to us what information? Different cameras use different focal lengths will have what kind of picture effect? Focal length and angle of view Many camera and lens buyers are It is considered that the length of the focal length determines the size of the object being imaged on the imaging medium (film or sensor). In addition to the focal length, the display area of the imaging medium can adversely affect the angle of view actually taken. For example, when a 50mm standard lens (35mm standard) is applied to a digital SLR camera, since the size of the camera’s own sensor is smaller than the image field of the lens (see diagram), the captured image is only the real view of the lens The middle part of the visual feeling is smaller screen angle, equivalent to a focal length lens longer viewing range. This