Why do smartphones have triple-quadruple cameras when “dedicated” cameras have just one? What makes it better and why do we not see the 3-camera setup on actual cameras then?
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I have a a dSLR camera. Last count I have 5 lenses.
Phones aren’t any different than my dSLR. All lenses, including your phone have a focal range. You can have a lens that is ok for most things, but not good at certain things. In cameras, lens with one focal point are called “Prime”. They have a limited filed of view, they are good in certain light situations, but maybe they distort your face up close or don’t show enough background. Zoom lens are just the opposite. They have very large focal ranges, but don’t necessarily let a lot of light in.
So you have a few lenses to cover the gamut of things you want to take pictures of.
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