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What is the use of external lens of mobile phone? How to choose?

  You may not be unfamiliar with mobile phones,but how much do you know about mobile phone shooting lenses?Below we understand that the mobile phone lens is basically a prime lens,and it is a wide-angle lens.This lens does not have the zoom ability,so you need to move back and forth when composing.

  Mobile phone lens talk about optical zoom is deceptive,because optical zoom and the thinner and thinner mobile phone itself is the opposite,optical zoom is achieved by telescopic lens group,to ensure that the lens group has space to telescopic,the lens must be thick,so the contradiction appears.

  Strictly speaking,digital zoom can not be counted as"zoom",it is to intercept a part of the area on the basis of the existing sensor range,and increase the area of a single pixel in this area,and then cause a"amplification"effect.

  Because the focal length of the lens is not changed,but only the pixels are forcibly enlarged,the result is naturally a serious lack of image details.For example,the iPhone6,cut the middle of the 8 million sensor 4 million,and then hard pull this part into the size of 8 million.

  This is like using Photoshop to enlarge the screenshot,the actual usable value is very small,so we want the phone to achieve zoom effect,shoot excellent and beautiful picture effect,then you need an external lens.So today,Frog will tell you about the external lens of the mobile phone.

  Before introducing the external lens of the mobile phone,there is a point to be made.Although the mobile phone is a prime lens,it can still make use of its focal segment characteristics to shoot very excellent works,and the use of external lenses only increases our shooting options.This is like playing a DSLR,buying several lenses with different focal lengths,but no matter the focal length,you can shoot excellent works.

  So what are the external lenses commonly used in mobile phones?Let me introduce you one by one.


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