为什么手机相机预览时很清晰而拍照后照片不清晰而且偏色?

2025年04月08日 09:08
有2个网友回答
网友(1):

一、偏色,也就是色差问题都存在,这是普遍现象,即使最高端的单反也不可避免。
二、预览清晰拍照不清晰,这有多种原因。
1、预览是动态的画面,就像在看视频。你是否发现在看一段很清晰的视频时,如果你截一张图
并单独看这张图就没有视频清晰。你也可以在拍照不清晰的环境下进行视频拍摄,一定会感
觉比拍照好很多。
2、手机相机本身的硬件配置都非常低。比如感光元件也叫传感器(CCD或CMOS),因为其手
机自身的体积限制,无法采用大尺寸感光元件,也就无法获得足够的感光量,这就使靠光过
日子的感光元件体力透支,干不好活。还有镜头也非常重要,但手机也因为体积限制,所以
不可能装一个光学素质很好的镜头。还有比如影像处理器等原因。
3、光线、距离、角度、拍摄技巧等等。

网友(2):

  手机预览清晰拍照不清晰,主要是如下原因:

  1. 手机预览是屏幕分辨率,比如1920*1080分辨率,也就200万像素的样子,而拍照后,通常是800万以上像素,即预览时,等于把照片缩小4倍,当然清晰,而拍报后,将照片放大4倍,所有噪点都放大了,所以感觉模糊。

  2. 预览是动态的画面,就像在看视频。感觉不到杂点,定格画面放大看,其实是有杂点的。

  3. 拍照后不清晰,也有可能跟对焦点不对,或者快门速度过慢手抖有关系。预览时因为是动态的,所以感觉不到这些变化。



  手机拍摄后偏色,是因为测光系统不准的原因,也可能是环境光线有影响,一般会出现在暗光环境下,或者有一个特别明显的大面积单色物体干扰了测光,正常室外白天拍摄是很少出现的。

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