Samsung says that the new Galaxy S24 Ultra has a “Quad Tele System” that offers four magnification levels: 2x, 3x, 5x and 10x. The middle two are achieved with optics, the first and last with advanced image processing. That’s just for zooming in, the S24 Ultra does have four actual cameras on its back – but it wasn’t that long ago when phones had just the one.

That was the case in 2016 when the Samsung Galaxy S7 and S7 edge arrived – there was a single 12MP camera with a 26mm f/1.7 lens. It was fairly advanced with Dual Pixel autofocus and OIS, but still it locked you into a single focal…

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