推荐回答(5个)
华为nova7后置摄像头有四个,根据不同的场合会自动选用。具有长焦,广角,TOF,高清的功能,平时只会启用其中的一个。
先说结论:不是前置也不是后置。如果后置拥有双倍光学变焦,那么就是能光学变焦的摄像头。
想明白这个结论是如何得来的,首先要了解两个问题:
1、为什么一般的手机前后摄像头都拍不出真正的“我”
2、要怎么才能拍出真正的“我”?
1、为什么一般的手机前后摄像头都拍不出真正的“我”
在此之前,我们要先搞懂手机的前后摄像头是个什么情况。
目前用在手机上的前置后置摄像头基本都是广角镜头,后置镜头的焦段一般为28mm,为标准广角;前置摄像头的焦段只会更广。
![](/picurl?url=https%3A%2F%2Fiknow-pic.cdn.bcebos.com%2Ff3d3572c11dfa9ecdd85a16a72d0f703918fc120%3Fx-bce-process%3Dimage%252Fresize%252Cm_lfit%252Cw_600%252Ch_800%252Climit_1%252Fquality%252Cq_85%252Fformat%252Cf_auto)
![](/picurl?url=https%3A%2F%2Fiknow-pic.cdn.bcebos.com%2F0bd162d9f2d3572c44496ba19a13632762d0c320%3Fx-bce-process%3Dimage%252Fresize%252Cm_lfit%252Cw_600%252Ch_800%252Climit_1%252Fquality%252Cq_85%252Fformat%252Cf_auto)
而广角镜头有两个最大的问题:1.容易带来桶形畸变;2.透视效果强烈。
什么是桶形畸变?
桶形畸变
上面这张本来应该横平竖直的网格图感觉好像“凸起来”了,这就是桶形畸变。无论是手机还是相机,绝大多数的广角镜头多存在桶形畸变的效果。虽然手机内的算法可以针对这个进行校正,但是无论怎么校正都不敢说每张广角照片都一定能消除桶形畸变的效果。
即使桶形畸变可以校正,但是透视效果是不可变的。
什么是透视效果?
![](/picurl?url=https%3A%2F%2Fiknow-pic.cdn.bcebos.com%2F03087bf40ad162d9a145956101dfa9ec8a13cd20%3Fx-bce-process%3Dimage%252Fresize%252Cm_lfit%252Cw_600%252Ch_800%252Climit_1%252Fquality%252Cq_85%252Fformat%252Cf_auto)
透视效果强烈近大远小
摄影时所讨论到的透视效果,一般是指使用广角镜头拍摄时因为对焦距离比较近,因此产生了强烈的近大远小效果。值得注意的是透视效果是光学效果,是无法消除的。即使是长焦镜头也会产生透视效果。但是因为长焦镜头的对焦取景距离一般较远,因此透视效果不明显而已。
因此,在桶形畸变和透视效果的双重作用下,使用相机的前置或后置来拍照是无法避免让五官产生一定的变形的。
2、双摄像头光学变焦有机会能拍出“真我”
![](/picurl?url=https%3A%2F%2Fiknow-pic.cdn.bcebos.com%2F8b13632762d0f703ca1962a118fa513d2697c520%3Fx-bce-process%3Dimage%252Fresize%252Cm_lfit%252Cw_600%252Ch_800%252Climit_1%252Fquality%252Cq_85%252Fformat%252Cf_auto)
![](/picurl?url=https%3A%2F%2Fiknow-pic.cdn.bcebos.com%2Fb999a9014c086e065003c83612087bf40ad1cb20%3Fx-bce-process%3Dimage%252Fresize%252Cm_lfit%252Cw_600%252Ch_800%252Climit_1%252Fquality%252Cq_85%252Fformat%252Cf_auto)
但是情况出现了变化。近年来手机双摄火热,有些厂商比如华为、一加、苹果将双摄中的一个摄像头做成了长焦端,等效约135画幅50mm焦段。50mm这个焦段的视角正是十分接近人眼的视角,如果拥有长焦端摄像头的手机控制好拍摄距离进行拍摄,是十分有机会拍出最接近人眼所见的“真我”的。
3.如果想要拍,怎么拍才最真?
如果想要拍出最真的自己,在日常拍摄中需要注意些什么呢?
用手机:
1.双摄手机尽量用长焦端进行拍摄;
2.与模特的距离尽量远,以半身或三分之二身人像为主;
3.切记怼脸拍。
![](/picurl?url=https%3A%2F%2Fiknow-pic.cdn.bcebos.com%2F6f061d950a7b02082b62c89c72d9f2d3572cc820%3Fx-bce-process%3Dimage%252Fresize%252Cm_lfit%252Cw_600%252Ch_800%252Climit_1%252Fquality%252Cq_85%252Fformat%252Cf_auto)
![](/picurl?url=https%3A%2F%2Fiknow-pic.cdn.bcebos.com%2F4d086e061d950a7b4d9eb9b91ad162d9f2d3c920%3Fx-bce-process%3Dimage%252Fresize%252Cm_lfit%252Cw_600%252Ch_800%252Climit_1%252Fquality%252Cq_85%252Fformat%252Cf_auto)
用相机:
1.镜头焦段尽量长(比如70200);
2.保持适当的拍摄距离;
3.注意后期使用镜头校正。
![](/picurl?url=https%3A%2F%2Fiknow-pic.cdn.bcebos.com%2F1c950a7b02087bf45b47a094e2d3572c11dfcf20%3Fx-bce-process%3Dimage%252Fresize%252Cm_lfit%252Cw_600%252Ch_800%252Climit_1%252Fquality%252Cq_85%252Fformat%252Cf_auto)
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华为nova 7(5G)后置四摄:6400万像素高清摄像头+800万像素超广角摄像头+800万像素长焦摄像头+200万像素微距摄像头,前置摄像头:3200万像素,支持固定焦距。全新人像超级夜景 3.0,夜景自拍清晰自然。更精致的细节处理,更自然的肤质优化,同时具备夜拍镜片去反光功能。
您可以登录华为商城官网查看更多手机信息,进行选择。
一般拍照都用一个摄像头,一个是普通镜头,一个是长焦,一个是广角,一个是tof镜头,平时只用一个。
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