this post was submitted on 24 May 2025
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Because different lenses are good at different things. On a three-lens setup, one is usually a telephoto lens for distance, another is a standard wide-angle lens for normal photography, and the third is an ultrawide angle for capturing more of a scene and for macro ultra-close-up photography.
Also you can film in 3D using two of the three.
Multiple lenses are a big part of why phone images are as high quality as they are these days.
And the one on the front is obvious, it enables things like video chat, selfies, and sometimes facial recognition (though that can also work by infrared and lidar).
all that effort and all I care about is scanning QR codes :(
But many people don't use any of those features. I get that many do, but every single smartphone with features I require has them.