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理解镜头焦距与视角的关系
每款镜头都有其固有的焦距,焦距不同,拍摄视角和拍摄范围也不同,而且不同焦距下的透视、景深等特性也有很大的区别。例如,当使用广角镜头的14mm焦距拍摄时,其视角能够达到114°;而当使用长焦镜头的200mm焦距拍摄时,其视角只有12°。不同焦距镜头对应的视角如下图所示。
由于不同焦距镜头的视角不同,因此,不同焦距镜头适用的拍摄题材也有所不同,比如焦距短、视角宽的广角镜头常用于拍摄风光;而焦距长、视角窄的长焦镜头则常用于拍摄体育比赛、鸟类等位于远处的对象。
![](https://epubservercos.yuewen.com/747057/11203261603330306/epubprivate/OEBPS/Images/img00060002.jpg?sign=1739350088-HzaN3ByZlZzpUF0iaIJgGu3Og0R1vjFe-0-30731b1a17721ae7e206a29ae1ad86ef)
超长焦/300mm
![](https://epubservercos.yuewen.com/747057/11203261603330306/epubprivate/OEBPS/Images/img00060003.jpg?sign=1739350088-T04A460PB78S4tOYTqa8dooml7f18PEv-0-d1de84504d3e4a9a644c57680ec531ae)
长焦/200mm
![](https://epubservercos.yuewen.com/747057/11203261603330306/epubprivate/OEBPS/Images/img00060004.jpg?sign=1739350088-2q4lSDOxfARbLRIAuzdP7J4fu3hxGtwW-0-946177197edea411268539217ae88fe1)
中焦/100mm
![](https://epubservercos.yuewen.com/747057/11203261603330306/epubprivate/OEBPS/Images/img00060005.jpg?sign=1739350088-GqYZ3k8j3grpflHLhT0rvsB3UEWoakec-0-c1fb6947cf028039f6f7bf12bfd4ce02)
标准/50mm
![](https://epubservercos.yuewen.com/747057/11203261603330306/epubprivate/OEBPS/Images/img00060006.jpg?sign=1739350088-r29rPs69gX6p2woroEZf0XecFiokb8GV-0-49204dde04c125e9a1a8cd6617f7e44d)
广角/35mm
![](https://epubservercos.yuewen.com/747057/11203261603330306/epubprivate/OEBPS/Images/img00060007.jpg?sign=1739350088-6UOSTtvp2Nospcahb2QHq7NDaYAEiEbg-0-89def66d7430c36827bdb0378c342a1c)
超广角/14mm
![](https://epubservercos.yuewen.com/747057/11203261603330306/epubprivate/OEBPS/Images/img00061001.jpg?sign=1739350088-SUsjI4BBuuwJHltUXArwF9gOUOSV67hy-0-75a7f3b80abe81b38802ac24bd7033a8)
市场报价:约为10000元
![](https://epubservercos.yuewen.com/747057/11203261603330306/epubprivate/OEBPS/Images/img00061003.jpg?sign=1739350088-IFoF7IOWu93nPY2ORlCdk1HaDe9lNplJ-0-84cdf48c029637596ebbba9f5fa08f2c)
MTF曲线图
![](https://epubservercos.yuewen.com/747057/11203261603330306/epubprivate/OEBPS/Images/img00061004.jpg?sign=1739350088-b1dV1ZnCpSeSJGIpwiZ7U7jCNU9yrEG2-0-214fa208909089461d28d9ada390ccf5)
视角图