Look how much better the iPhone camera has gotten over the years

One of the biggest improvements in the iPhone 6S is the camera. Apple upgraded the number of megapixels in the sensor from 8 to 12 and added ultra hi-res 4K video.

Lisa Bettany, cofounder of the photography app Camera+ and a professional photographer, compared the 6S's camera to every iPhone model. As you can imagine, the results are impressive.

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