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by jseliger 4492 days ago
If this is so good why aren't cameras using 2 lenses?

The literal answer to this question is that most serious cameras have interchangeable lenses; I shoot with an Olympus OMD EM5 and primarily use three primes. A lot of people use zoom lenses, or primarily use zooms.

If you're only referencing cell phones, I assume that there is an obvious trade-off between size and putting another lens in the camera.